However, contractions themselves can be different parts of speech depending on the words they are formed from. For example:
* I'm (I am) is a pronoun
* He's (He is) is a pronoun
* Can't (cannot) is a verb
* It's (It is) is a pronoun
* Don't (do not) is a verb
So, to determine the part of speech of a contraction, you need to look at the words it is formed from.