七年级上英语第三单元知识点

Unit 3 Is this your pencil?

知识要点1 Be动词的现在时

肯定句：主语+be动词+其他。It is a book.

否定句：主语+be动词+not +其他。It is not a book.

一般疑问句：Be动词+主语+其他？Is it a book?

回答：Yes, 主语+be. No, 主语+be +not. Yes, it is. / No, it isn’t.

一般疑问句是在句子中用提问的方式提供一些信息，要求对方用Yes或No回答的疑问句。本单元的一般疑问句主要由Be (Am, Is ,Are)+ 主语+其他？构成。

注意：变一般问I变you , my变your

I am Jim. Are you Jim? Yes, I am. No, I’m not.

This is my ruler. Is this your ruler? Yes , it is . No, it isn’t.

考题1 I.把下列句子变为否定句

1.I am a student. _____________________________________________

2.She is my friend. ____________________________________________

3.He is a good boy. ___________________________________________

4.Lily is my sister. ______________________________________________

5.They are my brothers. _________________________________________

II.把下列句子变为一般疑问句并做出肯定和否定回答。

1.This is my ruler. _______________________________

2.That is her English book. ________________________________

3.That is my eraser. ______________________________________

4.This is his dictionary. ___________________________________

5.They are good friends. ___________________________________

6.I am a teacher.____________________________________________

知识要点2

主格放在动词之前作主语，宾格放在动词后作宾语。

He is a good boy. We like him.

形容词性物主代词相当于形容词，后面必须接名词意思才完整。

My mother is a teacher.

名词性物主代词相当于“形容词性物主代词+名词”，其后不必加名词。

---Is this your book? ---No, it isn’t. It’s hers(= her book).

考题I.用人称代词填空

1.______ is a teacher. We all love _________.(她)

2. ________ is a good boy. Let’s play with _________. (他)

3. ______is in the classroom. You can find ________ in your desk.(它)

4. ---_______ are very smart today. ---Thank _______ very much. (你)

5._______ can’t find my ruler. Please help _________write the lost and found. (我)

II.用物主代词填空

1.I can’t find _________(我的) dictionary. Can I use __________(你的)？

2.George lost __________(他的) pen.

3.The notebook isn’t mine . It’s __________(她的).

4.---Mike, is this ___________(你的)picture? ---Yes, it is.

5.This is ________(她的) ID card. ____________(我的)is in my schoolbag.

知识要点3 no与not 区别

1.no表示否定“不”与yes 相对。可单独使用，用语回答一般疑问句。也可以用语于句

中，修饰名词。①---Is this your pen? ---Yes, it is ②I have no money.

2.not 用于构成否定句“不是”，不能单独使用，必须和be动词，助动词或情态动词之

后，才可以构成否定形式。Is not = isn’t are not = aren’t am not 不能够amn’t

3.no= not a/an no= not any

I have no book.= I don’t have a book.

I have no brother and sister.= I don’t have any brothers or sisters.

考题用no, not 填空

1.I have _________ money.

2.I am ________ a good mother.

3.It is _________ a cat. It’s a hat.

4.---Are you English? ---________. I’m Chinese.

5.---are you English? ---________, I’m ________.

知识要点4 Excuse me 与sorry区别

1.Excuse me 在问问题时，为了表示礼貌。“请问，”常用于借物，问路，插话，或会议

中途离开等。回答用Never mind. 或That’s all right.

2.Sorry= I’m sorry. “对不起”常用于做错事或有过失而向别人道歉，回答用It doesn’t

matter.(没关系)

考题4

1.当你不小心撞倒别人时应该说________. A. Excuse me B. Sorry C. It doesn’t matter.

2._______, Sonia. Is this your pencil? A. Excuse me . B. Sorry C. It doesn’t matter.

3.--_______ , can you answer my question? ---______, I can’t.

A. Sorry , Excuse me

B. Excuse me , Sorry

C. Excuse me , Excuse me

知识要点5 How do you spell it?

1.How +助动词+主语+其他？构成的特殊疑问句。

2.How “如何，怎样”询问身体健康状况，一般生活情况，天气，方式等。

3.How do you do ? 你好！用语初次见面。回答也用How do you do ?

考题：选择

1.How _____ you ? A. are B. do C. is

2.How _______ you spell answer? A. are B. do C. is

3.How _____ you _______ ? A. do , are B. are, do C. do , do

4.How _______ the weather (天气) today？A. are B. is C. do