Contractions
You will want to learn how to use contractions as soon as possible.
Contractions are used constantly in informal English. Examples of
contracted subject/verb forms are: TO
BE:
I am-->I'm
he is-->he's
we are-->we're
you are-->you're
they are-->they're TO HAVE:
I have-->I've
we have-->we've
you have-->you've
they have-->they've
Contractions
are frequently used with compound forms of verbs, especially the
progressive or continuous form of the present tense (I'm going.
/ We're leaving.) and the present perfect forms (I've received the
letter. / They've already left.)