Is she a stressed word

In our previous post, we shared 12 great tips to help you improve your English pronunciation.  For tip number nine, Understanding Word Stress & Sentence Stress, we explained the importance of word stress rules for communicating effectively in English. In this post, we delve a little deeper into the subject.

What is Word Stress?

The stress placed on syllables within words is called word stress. In one word, we place emphasis on one syllable, while the other syllables are given less emphasis.

English words only have one stressed syllable. Whilst longer words can have a secondary stress, it is always a much lighter stress. It is also worth noting that we stress vowel sounds and not consonants.

In English we have variable stress where the position of the stress is unpredictable. This contrasts with some other languages – like Polish or Finnish – that have fixed stress where the stress on virtually any multi-syllable word falls on a particular syllable. Learn more here.

Where you place stress or emphasis within a word can affect the way in which it is pronounced and therefore its meaning. As a result, knowing which syllable within a word should be emphasised or stressed is very important for correct pronunciation. The reason for this is that placing stress on the wrong syllable within a word can completely change the meaning of a word.

Understanding The Importance of Word Stress

So, understanding the importance of word stress is vital if you want to improve your English pronunciation and speak English like a native English.

But if word stress is so important, exactly what are the rules that we need to follow?

As with so many aspects of the English language, there are many rules to learn. Then, to make things even more tricky, there are also many contradictions or exceptions to those rules. This can make learning English more challenging for some students.

To help you out, we have compiled some simple guidelines for learning the rules of word stress.  We don’t cover all aspects of English word stress rules but the points  we have mentioned will certainly get you started.

English Word Stress Rules

1. Word Stress For Two-Syllable Words

Two-Syllable Nouns

If the word is a two-syllable noun, we usually place the stress on the FIRST syllable.

Example: MONkey, TEAcher, DIStance, INsect, TAble,

Two-Syllable Adjectives

If the word is a two-syllable adjective,  as with two-syllable nouns, we usually place the stress on the FIRST syllable.

Examples: SIlent, BORing, LIttle, PURple, STUpid, CLEver, FRIEndly

Two Syllable Verbs

Conversely, if the word is a two-syllable verb we generally stress the SECOND syllable.

Examples: beGIN, surVIVE, aTTEND, coLLECT, preVENT

See more examples of verbs where the second syllable is stressed.

Two Syllable Prepositions

The SECOND syllable is also stressed if the word is a preposition.

Examples: aROUND, beFORE, beLOW, inSIDE, toWARDS (See more examples of prepositions with stress on second syllable)

2. Word Stress For Words That Are Both Nouns & Verbs

When a word can be both a noun and a verb, we stress the FIRST syllable for the noun and the SECOND syllable for the verb.

Examples:

1) The violent CONflict between the couple conFLICTS with their pacifistic beliefs.

2) The PREsents he preSENTS his wife never fail to disappoint her.

3) They will no doubt disCOUNT my suggestion for DIScounts on Chinese courses for the elderly.

Click here for some good examples with audio included:

As mentioned, there are always exceptions to the rules. That said, it’s fairly accurate to say that only around 20% of two-syllable words have their stress on the second syllable.

3. Word Stress For Words Ending in ‘er’ & ‘ly’.

If a word ends in either ‘er’ or ‘ly’, whether it’s a noun, an adjective or an adverb, the general rules is that the stress is placed on the first syllable.

Example:

ANgrily, PERfectly, SUddenly, HAppily,

FOReigner, GARdener, BARtender, MANager

BIgger, BEtter, FAtter

4. Words That Use The Suffix ade, ee, ese, ique, ette & oon

Stress the actual suffix of words (including the first consonant before the suffix) ending in -ade, -ee, -ese, -ique and -ette and -oon

Examples:

deCADE, inVADE,

ampuTEE, guaranTEE, aGREE,

ChiNESE, oBESE, legaLESE,

vinaigRETTE, kitcheNETTE, laundeRETTE,

anTIQUE, obLIQUE,

carTOON, baBOON

5. Simple Word Stress Rules For Suffixes

The rule changes for words with a number of other suffixes such as -ery, -ian, -ible, -able, i-al, -cian, -ic, -ish, -ics, -ion, -ious, -ia, and -ient. Instead of placing the emphasis on the actual suffix as illustrated in the examples above, we stress the syllable just before the suffix.

Examples:

-ery: CELery, SURgery, reCOVery
-ian: boHEMian, coMEdian, ciVILian, beauTICian
-ible: AUDible, adMISSible, SENSible
-able: aDAPTable, SUITable, CHANGEable
-ial: fiNANcial, artiFICial, oFFICial
-cian: maGIcian, opTIcian, beauTIcian
-ic: BAsic, draMAtic, characteRIStic
-ish: GARish, ENglish, unSELfish
-ics: dyNAMics, aeRObics, hypNOtics
-ion: VERsion, classifiCAtion, CAUtion
-ious: harMONious, PREvious, VARious, FURious
-ia: TRIVia, maLARia, multiMEdia
-ient: ANcient, NUtrient, suFICient
-osis: thromBOsis, psyCHOsis, osMOsis

A good way to remember some of the suffixes above is to use the rule for nearly all suffixes that start with an ‘i’ or a ‘u’. For example, the suffixes -ion, -ual, -uous, -ial, -ient, -ious, -iuor, ior, -ic, -ity.

Notice again  how we stress the syllable immediately before the suffix in the following examples:

diVERsion,

unUSual,

conTINuous,

amBIGuous,

FATuous,

SPAtial,

TRANSient,

LUSCious,

suPERior,

behaviour,

JUNior,

STOic,

linGUIStic,

photoGRAPHic

Note, some exceptions to this rule include words ending in -ism, -ist and -ize.

English Word Stress Videos




How Dictionaries Help With Word Stress

If you are unsure about where to place the stress in a word, you can always refer to an English dictionary.  All good dictionaries give the phonetic spelling of a word.

You can learn which syllable of a word is stressed by looking at the phonetic spelling. The stressed syllable is commonly shown with an apostrophe (‘) just before or just after the stressed syllable.

Unfortunately, dictionary creators never agreed on one system so you should refer to your dictionary’s (how to use this dictionary) notes to see which system they use.

Here’s an example from my dictionary that shows which syllable to stress by placing the apostrophe immediately BEFORE the stressed syllable:

photograph | ‘fəʊtəɡrɑːf

photographic | ˌfəʊtə’ɡrafɪk 

Using the system of capitalising the stressed syllable as in all of my examples above, these two dictionary examples look like this:

PHOtograph

photGRAPHic

Learn Word Stress With Practise & Experience

As previously mentioned, the list of rules above is by no means complete. However, it does explain where to place the primary emphasis on numerous English words.

If the thoughts of learning all these rules is overwhelming, do not be too discouraged.  Many English learners naturally assimilate to word stress rules simply by listening and practicing the language.

Probably the best way to learn is from experience.  Try to get a feel for the music of the language by listening carefully to spoken English.

Of course, if you would like some extra assistance with your English speaking skills, contact us to find out more about our English courses in Hong Kong.

Here’s a brief overview of our English courses. Click the image for more details.

Making stress on English words and sentences is very important as stress whether on words or sentences changes the meaning of the utterance. it’s a very mature approach to use the technique of stress. Here we will describe “how to find the stressed syllable in a word?”

Stressed syllables

The correct formulation of stress in English is important primarily because numerous reading rules depend on the stress and unstressed syllable. For example, if an open syllable is under stress, then the vowel in it is read as it is called in the alphabet: cucumber [‘kju: kʌmbə] – the stress falls on the first syllable.

If we assume that this word should have a stress on the second syllable, then it would read as [kʌ’kju: mbə], and if on the third, then [kʌkʌm’bə:]. In other words, an incorrectly placed stress changes the sound of the word, which means it makes it difficult to understand. By the way, you need to remember that in English transcription the stress mark is placed in front of the stressed syllable, and not above it, as in Russian. Another important point: in fluent speech, sometimes stress helps to distinguish similar words. For example

• PHOtograph,
• phoTOgrapher,
• photoGRAPHic

These three words have different stressed syllables, which allows them not to be confused when speaking at a fast pace.

These three words have different stressed syllables, which allows them not to be confused when speaking at a fast pace.

Top 5 simplest rules 

1. If there are 2 syllables in a noun or adjective, then the stress usually falls on the first syllable: “HAPpy”, “SOfa”, “SISter”, “PAper”, “SILly”, “CLEver”.
2. If the verb has 2 syllables, then the stress often falls on the second syllable: “beGIN”, “atTEND”, “exPLAIN”, “supPORT”. For some words, stress is the only way to distinguish between a noun and a verb:

• a PREsent – to preSENT;
• an INcrease – to inCREASE;
• an OBject – to obJECT.

1. In words with different “smart” suffixes, the stress is placed immediately before the suffix:

• -able: enJOYable, dePendable;
• -ary: LIBRary, DIary;
• -graphy: geOgraphy, calLIgraphy;
• -logy: psyCHOlogy, termiNOlogy;
• -ion: classifiCAtion, inforMAtion.

1. In compound nouns, the stressed one is usually the first syllable, in verbs and adjectives – the second:

• BLACKboard, STRAWberry, MERmaid
• overCOME, underSTAND, self-CONfident

1. Long words can have two stresses: primary and secondary. As a rule, the main, stronger and more clear, falls on the third syllable, and the secondary – on the first (we will designate the secondary stress in bold type in the examples, and in transcription,the icon of such stress is usually placed below in front of the syllable):

• un derSTAND [, ʌndə’stænd], au toMAtically, un beLIEvable.

In words ending with a suffix like -ion , the stress falls on the syllable immediately preceding it. Suffixes of this type include:

– i + on, -i + ous, -i + al, -i + an, -i + ant, -i + ance, -i + ent, -i + ence .

The syllable that precedes the -ic (-ical) suffix is always stressed : republ ic, period ical . Stress retains its original place in words formed with suffixes and endings: -ly, -ful, -less, -nees, -ism, -ing, -er, -or, – (e) d, – (e) s … Prefixes (prefixes) are most often found in verbs and adjectives, in adverbs and prepositions. These prefixes remain unstressed :

1-consoles with a negative value (un-, in-, dis-, non-)

`comfortable ‘place’ – ` un`comfortabl e ‘uncomfortable’; di`rect ‘direct’ – `in`direct ‘ indirect’; to ap`pear ‘appear’ – to `disap`pear ‘ disappear’; es`sential ‘essential’ – `non-es`sential ‘not essential’;

2-re – meaning ‘again’ often matches the Russian prefix re

to write ‘write’ – to `re`write ‘rewrite

3-miss – meaning ‘wrong, wrong

to under`stand ‘understand’ – to `misunder`stand ‘misunderstand

4-pre – meaning ‘before, earlier

hi`storic ‘historical ‘ – `prehi`storic ‘prehistoric

5-inter- with the meaning ‘between, among, mutually

national ‘ national ‘ – ‘ inter’national ‘international

6-ex- with the meaning ‘ex, ex’ 

champion’ champion ‘ – ‘ ex-‘champion ‘ex-champion

7-ultra- meaning ‘ultra, over

‘modern ‘ modern ‘ – ‘ ultra-modern ‘ultra modern

In modern English, there are a large number of words with various prefixes that have partially or completely lost their meaning. These words are indivisible and are not recognized as formed with the help of prefixes: re`peat ‘to repeat’, re`main ‘to leave’, re`fuse ‘to refuse’, pre`pare ‘to cook’, sub`ject ‘to expose’, inter`rupt ‘interrupt’, etc.

In English, polysyllabic words (with 4, 5 or more syllables) have, as a rule, two, less often three stresses, one of which is the main one and is indicated by an icon at the top of the stressed syllable, the other is secondary, which is placed at the bottom of the stressed syllable : , demon`stration ‘ demo ‘.

In most of the English compound nouns the stress falls on the first component of a compound word : a ` reading – lamp , a ` sitting – room , a ` writing – desk .

Two equal stresses are typical for compound and compound numerals, compound adjectives, phrasal verbs: `fif`teen,` forty -`five, an `arm`chair, an` ice -`cream, a `passer -`by,` up` stairs, `down`stairs, to` put` down, to `put` on,` north -`east, `well -`planned,` good – looking.

The rhythmic tendency to alternate stressed and unstressed syllables leads to the fact that words that have two stresses in isolated pronunciation may lose one of the stresses in coherent speech: She is a ‘ well – known ` writer . This ‘ writer is ‘ quite well -` known .

A number of words in the English language, unlike Russian, retains full vowel quality in an unstressed syllable, for example: google translate and , Adverb , the handwork , forward , football , prospect , schoolgirl , schoolboy , sunrise , Pronoun , etc .

Phrasal /sentence stress 

Not every word is stressed in an English sentence. For example, service words (prepositions, conjunctions, particles, articles), pronouns, auxiliary verbs often remain unstressed:

• What are you doing? – I am reading.
• She lives in the village.
• So, in these examples, only the highlighted words will be stressed.

Phrasal stress helps to build a kind of rhythm in English speech, because, as a rule, stressed syllables are pronounced at the same interval. Because of this, unstressed syllables should be shortened, pronounced fluently. In general, this is one of the reasons why it is sometimes so difficult to understand spoken language. A short video tutorial will help you deal with this issue.

In addition, it is important to understand which of the stressed words is the most important in the sentence, that is, it carries the main logical stress.

• He visits his parents once a week. (not she)
• He visits his parents once a week. (he does not call them, etc)
• He visits his parents once a week. (his parents, not his wife’s parents)
• He visits his parents once a week. (parents, not aunt and uncle, etc)
• He visits his parents once a week. (once, not twice)
• He visits his parents once a week. (once a week, not once a month)

1-In full negative forms, 

only a particle is stressed, the verb is unstressed: It is ` not on the` table. `Do I of not ` like IT. He can` not `do it.

2-The verb is (3rd person singular of the verb to be )

in an unstressed position retains the full vowel quality, but is pronounced less distinctly and with greater speed than under stress. Reduction is leading to a complete loss of the vowel. Such an abbreviated form is pronounced together with the preceding word, after a voiceless consonant as [s], after a voiced consonant as [z].

3-Demonstrative pronouns 

this , that , these , those are usually stressed if they are the subject or object in a sentence: ‘ This is an ` apple . ‘ Take ` these .

Demonstrative pronouns are not stressed as a definition: That ‘ orange is ` ripe . It should be remembered that in an unstressed position, the demonstrative that is not reduced and is pronounced with the vowel [æ] – [ðæt].

4-Prepositions

 in , on , off , without are not reduced in an unstressed position and retain their phonemic composition unchanged .

5-Regardless of the stress / non-stress,

the indefinite pronoun any [`enɪ] is always pronounced in full . In the meaning of ‘some amount’, it, as a rule, is not striking ( ‘ Is there any / paper ?), In the meaning of’ any ‘- it is striking ( ‘ Give me ‘ any book ,  please ). 

6-The indefinite pronoun some 

before the noun is not struck and has a reduced pronunciation [səm]: I ‘ need some ` milk . If there is no noun after some , the pronoun is stressed: ‘ Some like / coffee , ‘ others like ` tea .

7-In the final position in the phrase,

the unstressed some is not reduced and [sʌm] is pronounced: You may ` take some . In the meaning of ‘some, some’ some is not hit, but always retains the full form [sʌm]: Some ‘ students are ‘ waiting for you ` outside .

Usually it has a reduced form and does not strike the adverb there in the introductory construction there is  there are : There are some ` sweets on the plate .

8-The adverb 

there as a circumstance of place is not reduced: There are a ‘ few ` flowers there .

A phrase may contain several informatively significant words, emphasized. The stressed syllable of the most important word in meaning is the nucleus of the intonation group ( Nucleus ), and the stress on this word is called nuclear. The most important word in meaning is usually located in the final position, and the stressed syllable of the last lexically full-valued word is the nuclear one. At the same time, the core can shift to the middle or even the beginning of the phrase. The meaning of such statements becomes clear only in context. A shift of the core, highlighting by stressing a word in a sentence stronger than all other words is called logical stress… Logical stress is used to contrast one word to another or to strengthen the meaning of a word: He saw that picture . – He saw this picture . Highlighting the word he with a logical stress , we contrast it with pronouns: she or they . That day it was raining. – It actually rained that day . Allocating logical stress WAS , we thus reinforces the importance of this phrase in the sentence.

Since logical stress goes beyond the usual phrasal stress, it may turn out that it will use it to highlight the word in the sentence that is usually unstressed, for example, a personal pronoun, preposition, article or auxiliary verb: The book is on the table not under it .

The number of options for logical stress depends on the purpose of the statement and the communication situation:

This year we went on an excursion to New York for the first time.

This year we went on an excursion to New York for the first time.

This year we went on an excursion to New York for the first time.

This year we went on an excursion to New York for the first time.

This year we went on an excursion to New York for the first time.

This year we went on an excursion to New York for the first time.

9-Stress on the first part of a compound word:

a di`van-bed, a `coffee table, a` sitting-room, a `dining-room, a` bedroom, a `window-sill, a` flower-bed.

10-Words with two equal accents

an `ice-`cream, a` passer-`by, `south-`east,` north-`west, `up`stairs,` down`stairs.

11-Compound adjectives with two equal accents: `

ugly-`looking,` badly-`made, `fair-`haired,` broad-`shouldered, `hard-` working, `absent-`minded,` ill-`shaped, ` medium-`sized, `kind-`hearted.

12-Verbs with adverbs-postpositions with two equal stress: 

to `sit` down, to `stand` up, to `go` on, to `turn` off, to `come` back, to `think` over, to `find` out, to `look` through, to` do a`way.

So, the correct placement of the stress is very important, while the stress on each word is a clear sign of a foreign accent. If you want to get rid of it, learn to imitate the speech of native speakers, paying attention to rhythm, tempo, and phrasal stress. Just 5 minutes a day will significantly change your pronunciation for the better. Learning English on Skype will help you complete this task (and many others) with ease.

It is also important to
note that syllables are different from letters. For example, “come” has four
letters but one syllable. On the other hand, «Sunday» has six letters
but two syllables.

There are different types
of stress. Before you proceed, make sure you read it up using the links below.
It will aid your understanding of this article.

The meaning and types of stress. Episode 1

The meaning and types of stress. Episode 2

Features of a stressed
syllable

Stressed syllables
possess similar feature which enables us to identify them. According to Roach
(2004), «…all stressed syllables have one characteristic in common, and
this is prominence.» Four main factors make a stressed
syllable prominent:

1. Loudness

Loudness is an important
factor in determining the stressed syllable of a word. When pronouncing a word,
the syllable that is louder than the others is heard as stressed. In other
words, for hearers and listeners, stressed syllables are perceived as louder
than unstressed syllables.

2. Length

A stressed syllable is
usually longer than the other syllables in a word. Roach (2004) asserted that
«If one of the syllables in a word is made longer than the others, there
is quite a strong tendency for that syllable to be heard as stressed»(p.
94).

As regards this,
Umera-Okeke (2015, p. 125) asserted that «Syllables containing long vowels
are viewed as more prominent than those with short vowels.»

3. Pitch

Pitch is the extent of
vibration of the vocal cords when producing the syllables of a word. In a word,
a syllable is heard as stressed if it is said with a high pitch unlike the
other syllables. Umera-Okeke (2015) opined that «when there is a pitch
change on a syllable, that syllable is seen as being more prominent» (pp.
125 — 126). For example, in the word «Pandemonium», the primary
stress is on the third syllable, «mo», since there is a pitch change
on that syllable.

4. Quality

The quality of a sound in
a syllable determines whether or not that syllable is stressed. That is to say
that «a syllable of a sound will tend to be prominent if it contains a
vowel that is different in quality from the neighbouring vowels» (Roach,
2004, p. 94). Vowels are very important in determining the stressed syllable of
a word. Therefore, one needs to pay attention to the type of vowel a syllable
contains. Within vowels, open vowels are more prominent; thus, a syllable
containing an open vowel is most likely to be stressed.

When next you pronounce a
word, take note of these aforementioned features. It is also important to state
that, of all these factors, loudness and length are
more important in determining the stressed syllable of an English word.

Let’s
look at some rules that will enable you identify the stressed syllable of word.

RULES THAT WILL ENABLE
YOU IDENTIFY THE STRESSED SYLLABLE OF A WORD

1. Monosyllabic words,
such as come, go, sit etc., are
usually stressed since they can’t be divided into different syllables.

2. Numbers that end in
«ty» are stressed on the first syllable while numbers that end in
«teen» have their stress on the second syllable. For example,
«sixty» has its stress on first syllable (SIXty) while
«sixteen» has its stress on the second syllable (sixTEEN).

3. Most bisyllabic nouns
and adjectives are usually stressed on the first syllable.

Examples: BAS-tard, PRE-tty,
CLE-ver, DOC-tor, STU-dent etc.

However, there is an
exception to this rule, and you have to learn these words by heart:
ho-TEL,  ex-TREME, con-CISE etc.

4. Bisyllabic verbs and
prepositions are usually stressed on the second syllable. Examples:
be-LOW, a-BOUT, a-BOVE, be-TWEEN, a-SIDE, pre-SENT, re-PLY, ex-PORT etc.

5. Some words in English
language function as both nouns and verbs. When such words function as noun,
the stress is usually on the first syllable, and as verbs, the stress is usually on
the second syllable.

Examples:

i. PRE-sent (a gift)
vs. pre-SENT (to give something formally to someone).

ii. RE-fuse (garbage) vs.
re-FUSE (to decline).

iii. SU-spect (someone
who the police believe may have committed a crime) vs. su-SPECT (to believe
that something is true, especially something bad).

However, this is not
always the case. For example, the word «respect» has its primary
stress on the second syllable both when it’s a verb and a noun.

6. Six syllable words
ending in «tion» are usually stressed on their fifth syllable. Examples:
per-so-ni-fi-CA-tion, ca-pi-ta-li-SA-tion, i-ni-tia-li-SA-tion etc.

7. Three syllable words
ending in «ly» often have their stress on the first syllable. Examples:
OR-der-ly, QUI-et-ly etc.

8. Words ending in
«ic», «sion» and «tion» are usually stressed on
the second-to-last syllable. In this case, you are to count the syllables backward
in order to get the second-to-last syllable. Examples: cre-A-tion, com-MI-ssion, au-THEN-tic etc. However, there are times when you need to count the syllable forward in order to get the second-to-last syllable. Examples: pho-to-GRA-phic, a-ccom-mo-DA-tion, ex-CUR-sion etc.

9. Words ending in
«cy», «phy», «al», «ty» and
«gy» are usually on the third-to-last syllable. You should also the
count the syllables backward to get the third syllable. Examples: de-MO-cra-cy,
pho-TO-gra-phy, CLI-ni-cal, a-TRO-si-ty, psy-CHO-lo-gy etc.

10. Most
compound nouns (a word made up of two or more nouns) have their stress on the
first noun. Examples: PLAYground, BLACKboard, FOOTball, KEYboard
etc.

BONUS
Compound
verbs (a verb made up of two or more words) and compound adjectives (an
adjective that is made up of two or more adjectives, which are linked together
by a hyphen) usually have their stress on the second word or syllable.

Examples:

outRIDE (compound verb).

outSHINE (compound verb).

old-FA-shioned (compound
adjective).

In sum, the
identification of the stressed syllables of English words is not an easy task; it is a process that requires a lot of practice and repetition as there are many
rules and exceptions. For native speakers, this wouldn’t be a problem, but for
non-native speakers of the language, the reverse is always the case. 
Therefore, the latter should immerse themselves in the enlightening dew of word
stress through constant practice in order to be fortified. Should there be any
problem while going through this process, don’t hesitate to make reference to
this page.

You can stress any word, and it will give a slightly different meaning on what you’re saying. The most natural stress for example one is on the word travel, and for number two it’s accountant. I’m going to list out the different stresses for the first example, then tell you what they mean:

---

He wants a job that lets them travel.

(For these examples, I’ll pretend that them refers to his family)

Someone else wants him to have a different job. Maybe his wife wants him to have a job that earns a lot of money, but he wants a job for the reason above.

He wants a job that lets them travel.

He already has a job doing something else, but he wants a different one.

He wants a job that lets them travel.

He doesn’t want more than one job. Sounds a bit clumsy, if that’s what you’re trying to say then you’d say «He wants a single job that lets them travel.»

He wants a job that lets them travel.

He probably already has the means to let his family travel, maybe he has a lot of money saved up, but he wants a job to be his new means of paying for his travel.

He wants a job that lets them travel.

Doesn’t add any meaning to the sentence, you’d never add stress here unless someone didn’t hear you say that the first time.

He wants a job that lets them travel.

He doesn’t want a job that forces his family to travel.

He wants a job that lets them travel.

He cares more about letting his family travel than himself travel

He wants a job that lets them travel.

His family doesn’t travel yet, he wants a job so that they will be able to.

(Without any context, this is the most neutral place to put a stress on a word)

---

So in summary, whenever you add stress on to a word imagine what the sentence could be if you swapped the word with something else. That will tell you what information you’re really trying to get across to the listener:

«She is my girlfriend» -> You probably thought someone else was my girlfriend

«She is my girlfriend» -> You don’t believe she’s my girlfriend, but she is

«She is my girlfriend» -> You might have thought she was someone else’s girlfriend

«She is my girlfriend» -> Maybe you thought we were brother and sister