What part of speech is that in a sentence for each word

It was all planned well before today that I can be sure about.

Here I believe that that is subordinating conjunction.

It was all planned well before today; I can be sure about that.

Here I believe that that is pronoun, hence the need for the semicolon to separate the two coordinating clauses.

And are they both right? Please correct me if I am wrong.

The word «that» is used identically in both sentences. Since it is not functioning as a subordinator, and the writer is linking two independent clauses, a semi-colon is required in both cases. Edwin is right: using a comma before «that» would create a run-on.

That said, it doesn’t mean that a writer might not chose a comma instead. It only means that, given the rules of formal written English, a semi-colon (or a period) would be the conventional choice.

answered Jan 13, 2014 at 17:14

answered Feb 4, 2014 at 4:53

As John commented, that is a pronoun in each case. The confusion around whether it is a subordinating conjunction most likely stems from other grammar issues in the sentence. Quoting John’s comment:

There should be a comma after today in the first one, to emphasize the fact that that is stressed, but it’s just a fronted object in apposition with the previous clause. It functions like a conjunction does, to introduce a clause, but so do complementizers and many other constructions, so it’s nothing special.

answered Oct 8, 2013 at 18:30

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1. 

   1

   Identify naming words as nouns. A noun is any word that names a person, place, thing, or idea. Nouns can be concrete (Alice, dog, table, etc.) or abstract (beauty, independence, cycle, etc.).^[1]
   

   • Proper nouns are used to name a specific person, place, or thing, and the main words are always capitalized (Fred, New York, the Declaration of Independence).
   • Nouns can be either singular or plural.
   • Nouns can be possessive, in which case they typically end in ‘s or s’.

2. 

   2

   Know that pronouns stand in for nouns. Sometimes, a noun is not always named. Words that do not directly name a person, place, thing, or idea, but take the place of a word that does, are pronouns.^[2]
   

   • Some pronouns stand in for people’s names (he, our, they, hers, etc.).
   • Other pronouns represent an object or idea (it, these, this, etc.).
   • Pronouns may also stand in for very indefinite nouns that may be difficult to name without the use of a pronoun (everyone, no one, something, etc).

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3. 

   3

   Recognize action words as verbs. A verb is any word that is used to express an action (run, cleaned, driven, etc) or being (is, was, been, etc). Verbs have multiple tenses that express when the action took place.^[3]
   

   • Auxiliary verbs (also known as helping verbs) are words that are used to change the tense of the main verb (will, did, would, etc.). These are still considered verbs.

4. 

   4

   Learn that adjectives modify nouns and pronouns. An adjective is any word that is used to modify or describe a noun or pronoun (blue, many, smart, etc.). Adjectives typically answer questions like «how many?», «what kind?», or «which one?»^[4]
   

   • Numbers are considered adjectives when they are used to answer the question «how many?»
   • Articles (a, an, and the) are considered adjectives by many because they answer the question «which one?» However, some people consider articles to be a separate part of speech.

5. 

   5

   Know that adjective and verb modifiers are adverbs. An adverb is similar to an adjective in that it is used to describe or modify. Instead of modifying a noun or pronoun, however, an adverb modifies a verb or adjective (happily, extremely, then, etc.). Adverbs typically answer the question «how?», «why», «when?», or «how much?»^[5]
   

   • Adverbs may also modify other adverbs. (I ran very quickly.)

6. 

   6

   Understand that prepositions express relationships. A preposition is a word or phrase that is used to show the relationship between noun or pronoun and another element in the sentence (at, by, in, to, from, with, etc.). Prepositions are typically very short words.^[6]
   

7. 

   7

   Identify words used to join clauses as conjunctions. A conjunction is a word that connects other words, phrases, or clauses (and, but, or, because, etc).^[7]
   

   • Coordinating conjunctions are used to join two clauses that are equally important to the sentence. There are 7 coordinating conjunctions: and, but, for, nor, or, so, and yet. (I like cats, but I don’t like dogs.)
   • Subordinating conjunctions are used to join a main clause and a subordinate clause, which is less important to the sentence. (I went outside, although it was raining.)

8. 

   8

   Recognize exclamations as interjections. An interjection is a word or phrase used to express an emotion or feeling, such as surprise. (oh, wow, my goodness, etc). Interjections are capable of standing alone and are not grammatically related to the rest of the sentence. However, they can also be included in a sentence, separated by parenthesis, dashes, or comas on either side of the interjection.^[8]
   

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1. 

   1

   Learn the Subject-Verb-Object rule. Most sentences in the English language have the same basic structure: the sentence begins with the subject, followed by the verb, and then the object (if the sentence has an object). There are exceptions to this rule, but understanding the norm can help you identify the parts of speech in most sentences.^[9]
   

   • Both the subject and object of a sentence will contain a noun or pronoun. This means that a sentence that has both a subject and an object will contain a noun or pronoun both before and after the verb. (I ate the apple.)
   • The subject and object may contain modifiers such as adjectives as well.
   • When the sentence has a direct object, it will come directly after the verb. (I like cookies.) When the sentence has an indirect object, it will come after a preposition. (I gave the card to Frank.)

2. 

   2

   Understand correct adjective and adverb placement. Although there are certainly exceptions to the rules, the placement of adjectives and adverbs is usually very predictable. Understanding where these words are most often found can help you identify them in sentences.

   • Adjectives are almost always found before nouns and pronouns (We look at a red dress.) or after the linking verb «to be» (The dress is red.)^[10]
     
   • When adverbs are used to modify adjectives, they are almost always found right before the adjective. (The meal was truly delicious.)^[11]
     
   • When adverbs are used to modify verbs, they may be found before the subject (Later I will walk to school.), directly before the verb (I will carefully clean the artifacts .), or directly after the verb. (I go to the park frequently.)

3. 

   3

   Identify clauses and phrases to find conjunctions. Because conjunctions are typically found between two clauses or phrases, you should be able to identify one by looking for the clauses or phrases that it joins together. If the word comes between the two clauses or phrases and seems to join them, it is likely a conjunction.

   • Conjunctions like «and» and «but» are sometimes used at the beginning of a sentence, although this is more rare. When it is done, you should be able to identify the other clause or phrase in the previous sentence.

4. 

   4

   Use exclamation points to identify interjections. Some interjection are followed by exclamation points because they express emotional responses.^[12]
   If you see an exclamation point, the word proceeding it may be an interjection, although exclamation points are used after other types of words as well.

   • Not all interjections are marked by exclamation points. Don’t rely on exclamations as the only way to recognize interjections.
   • Another clue that a word might be an interjection is that it is used alone. If there are other words in the sentence, it is less likely to be an interjection.

5. 

   5

   Look for nouns and pronouns to identify prepositions. Prepositions are typically found before noun or pronoun phrases. (I went to the store.) This is because the preposition expresses the relationship of the noun or the pronoun to the previous part of the sentence.

   • Keep in mind there may be an adjective, adverb, and/or article between the preposition and the noun or pronoun. These modifiers are all considered to be part of the noun or pronoun phrase. (We paid for the very expensive jeans.)

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1. 

   1

   Recognize suffixes that are common in nouns. Although not all nouns contain one of these suffixes, many do. Understanding that they are most common in nouns can help you identify the part of speech of a word, even if you do not know its meaning. Look for the following suffixes to help identify nouns:^[13]
   

   • -ion (population)
   • -sion (tension)
   • -tion (attention)
   • -acy (accuracy)
   • -age (image)
   • -ance (allegiance)
   • -ence (permanence)
   • -hood (childhood)
   • -ar (scholar)
   • -or (editor)
   • -ism (idealism)
   • -ist (realist)
   • -ment (government)
   • -ness (sadness)
   • -y (beauty)
   • -ity (capacity)

2. 

   2

   Know which suffixes are common in adjectives. Just as with nouns, there are certain suffixes that are most commonly used with adjectives (although there are exceptions). Committing the following suffixes to memory may help you identify adjectives in sentences more easily:^[14]
   

   • -al (clerical)
   • -ful (wonderful)
   • -ly (friendly)
   • -ic (chronic)
   • -ish (squeamish)
   • -like (childlike)
   • -ous (contagious)
   • -y (yappy)
   • -ate accurate
   • -able (laughable)
   • -ible (horrible)

3. 

   3

   Learn which suffixes are common in verbs. There are a few suffixes that are used with verbs more often than any other type of word. If you see one of the following suffixes on a word, it is likely that it is a verb:^[15]
   

   • -ify (typify)
   • -ate (proliferate)
   • -ize (rationalize)
   • -en (tighten)

4. 

   4

   Remember that most adverbs share a common suffix. Adverbs are by far the easiest parts of speech to identify using suffix clues. This is because the majority of adverbs end in the suffix -ly (merrily, wonderfully, quickly, etc.). If you see a word that ends in this suffix, there is a very good chance that it is an adverb.^[16]
   

   • There are some words that end in -ly that are not adverbs (butterfly), so be careful not to overgeneralize.
   • There are also a few adverbs that do not end in -ly (well, fast, very, etc.).

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Practice Questions and Answers

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• Context is key, as some words can act as multiple different parts of speech, depending on their role in a sentence.

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