用am，is或are填空，然后总结其用法。

(1)That's my father and this ________ my mother.

(2)This is my cousin and that ________ my sister.

　　(3)－________she your sister?

　　－Yes, she ________.

　　(4)－And ________ he your brother?

　　－No. He's my friend.

　　(5)－________ Guo Peng your brother?

　　－Yes, he ________.

(6)I ________ his friend. I'm not his brother.

　　(7)－________ you Jack's brother?

　　－No, I'm not. I ________ his cousin.

(8)These ________ my grandparents.

　　(9)－________ this your aunt?

　　－Yes, it ________.

(10)These ________ my parents, those ________ my grandfather and grandmother.

(11)These are my brothers. They ________ Jeff and Jack.

(12)They aren't my sisters. They ________ my friends.

am用于第一人称单数I之后；is用于第三人称单数ge，she，it以及相当于he，she或it；are用于第二人称或所有人称的复数，表达“是”的意思。可用下面的口诀来帮助记忆：“我用am你用are，is用于他她它，复数全都要用are”。

I am…可以缩写成I'm，he is可以缩写成 he's，she is可以缩写成加she's，it is可以缩写成it's，而we are，you are，they are可分别编写成we're，you're，they're。am，is，are的否定形式是在后面加not，如：am not，is not，are not。is not通常缩写为isn't，而are not通常缩写为aren't。如：

(1)I'm Alice, I'm not Mary. She's Mary.

(2)This isn't my brother. He's my cousin.

(3)They're my brothers. They aren't my friends.

I would like to talk___ my son’s teacher.
　　A. in　 　　B. about　 　　C. with　 　　D. all the above
　　　　

C　 点拨：talk with表示和某人交谈
　　　　

When does Edgar leave ___ Japan (日本)?
　　A. of　 　　B. form　 　　C. for　 　　D. in
　

C　　点拨：leave for表示动身去某地
　　

The girl is too young ___ to school.
　　A. to go　 　　B. too go　 　　C. not to go　 　　D. don’t go to
　　

A　　too…to 表示：太……不能　
　　

Let’s talk ___ the movie at night.
　　A. to　 　　B. in　 　　C. from　 　　D. about
　

D　　点拨：talk about 表示谈论