完整形式 = 缩写形式
I am = I’m
we are = we’re
is not = isn’t
they are = they’re
you are = you’re
are not = aren’t
she is = she’s
there are = there’re
has not = hasn’t
he is = he’s
what is = what’s
have not = haven’t
it is = it’s
who is = who’s
can not = can’t
Tom is = Tom’s
where is = where’s
that is = that’s
there is = there’s
1、询问他人身份：
Who’s this? 这是谁？
This is….He/She is my…. 这是……。他/她是我的……。
例：
Who’s this? 这是谁？
This is Ann. He is my friend. 这是安。他是我的朋友。
Who’s that? 那是谁？
That’s….He/She is my…. 那是……。他/她是我的……。
例：
Who’s that? 那是谁？
That’s Coco . She is my cousin. 那是可可。她是我的表妹。
2，原形与缩写：
Who is = who’s
That is = that’s
