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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.
查看习题详情和答案>>1．I won't be able to finish the housework without your help．（改为同义句，以下同）
1 won't be able to finish the housework you help me．
2．I'm glad that my grandfather is healthy now．
I'm glad that my grandfather is in now．
3． Work hard, or you will fall behind others．
you work hard，you will fall behind others．
4．1 am not sure what I can buy for my mother．
I am not sure what for my mother．
5．如果你上学迟到了，老师将不让你进去。（完成翻译句子；以下同）
you are late for school, the teacher let you in．
6．那时她靠在街上卖报纸谋生．
She a by selling newspapers in the street in those days．
7．昨天我和同学争吵起来，事后我感到很后悔。
I my classmate yesterday．After that I felt very sorry．
8．课后我们应多讲英语。
We should speak English as as after class．
9．你不应该在阅览室里吸烟。
You to smoke in the reading-room．
10．请把书拿去给他并把词典给我带来。
Please the book to him and the dictionary to me．
查看习题详情和答案>>1.用英语说那是什么？
What’s that _________ __________?
2.它是什么颜色？他是黑白相间的。
_______ ________ is it?It’s _________ __________ _________.
3.她姓什么？
What’s ________ _________ _________?
4.这是你的钥匙吗？ 不是。是她的。
Is this ________ _______ ? _______,it _______. _______ is ______ key.
5.你的电话号码是多少？
What’s your _________ __________?
6.那是我祖父母。
________ are _________ __________.
7.你如何拼写它？
________ do you _________ it ?
8.这是我的全家福。
Here is my ________ __________.
9.他不是我爷爷
______ ________ _________ grandfather.
10.请拨打514-1234 找艾伦练习.
Please ________ Alan ________ 514-1234.
查看习题详情和答案>>My grandfather ________ ________ be ill, but now he is quite healthy because of exercise.
2. 那个男孩很聪明,他每天自学法语.
The boy is very clever. He ________ ________ French every day.
3. 动植物需要充足的水分,没有水它们不能生存.
Plants and animals need ________ ________ water, and they can't live without it.
4. 对不起,我把你错当成你弟弟了.
I am very sorry that I ________ you ________ your brother.
5. 孩子们正盼望着春节的来临.
The children are ______ ________ to the Spring Festival.
My grandfather _________ _________ be ill, but now he is quite healthy because of exercise.
2. 那个男孩很聪明，他每天自学法语。
The boy is very clever. He _________ _________ French every day.
3. 动植物需要充足的水分，没有水它们不能生存。
Plants and animals need _________ _________ water, and they can’t live without it.
4. 对不起，我把你错当成你弟弟了。
I am very sorry that I _________ you _________ your brother.
5. 这座城市推掉了许多旧房子，同时也建起了相当多的新建筑。
The city _________ _________ many old buildings and built quite a few new ones.