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.)

Examples of Contractions

• Yes, that's right. I plan to travel some in the U.S.
• I'm going to spend some time in Atlanta. After that, I'm going to Washington, Chicago, and California.