The boy is ________ his cousin.

[　　]

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.

根据所给中文和提示完成句子（共5题；每题2分，满分10分）

106. 她把她大部分的精力放在了研究中国历史上。

　　 She ___________________into __________Chinese history

107. 为何不选她扮演这部电视剧的主角呢？

　　 Why not _______________ to ________________________ in the TV play?

108. 我没有勇气和我的朋友分享我的烦恼。

　　 I have _________________ to______________ with my friends

109. 我听说那家银行被抢了五百万元。

　　 I heard ___________________________ 5,000,000 yuan.

110. 昨天这个时候他被看见与他表弟打架。

He was __________________ with his cousin _______________.

　　His cousin is ______ a shop assistant ______ a soldier. He is an engineer.

[　　]

　　A. neither…nor　　　B. both…and

　　C. either…or　　　　D. not only…but also