人教版七上英语unit3知识点

七上知识点unit3

重点短语

1. an eraser 一块橡皮。

2. excuse me 劳驾请原谅

3. What about...? = How about...?

(询问消息或提出建议) ...怎么样？...好吗？

4. thank you for... = thanks for... 为...而感谢

eg: Thank you for your help. 感谢你的帮助。

Thank you for helping me. 感谢你帮助我。

5. help sb do = help to do = help with 帮助某人做某事eg: Please help me find my book.

Please help me to find my book.

Please help me with my English.

6. welcome to+地点欢迎来到某地

eg: Welcome to China.

7. You're welcome. 别客气

8. an ID card 一张学生卡/身份证

9. ask sb to do 让某人做某事

ask ... for... 请求, 恳求(给予)

eg: I ask Lisa to help him.

I ask my mother for a pen.

10. an e-mail 一份电子邮件

11. call sb 给某人打电话

call+电话号码拨打某个电话号码

call sb at 电话号码给某人拨打某个电话号码

eg: Please call Bob.

Please call 1234.

Please call Bob at 1234.

12. a set of 一套, 一副, 一组

eg: a set of keys 一串钥匙

重点知识点

1.含be动词的句子变一般疑问句及否定句规则:

疑问句: 把be动词提前, 如遇第一人称改为第二人称。

否定句: 在be动词后加not否定。

eg: I'm a student.

Are you a student? Yes, I am. No, I'm not.

I'm not a student.

She is my sister.

Is she your sister? Yes, she is. No, she isn't.

She isn't my sister.

They are Helen's brothers.

Are they Helen's brothers? Yes, they are. No, they aren't.

They aren't Helen's brothers.

2.形容词性物主代词和名词性物主代词的区别与用法:

区别: 形容词性物主代词相当于形容词，其后要加名词。

名词性物主代词相当于名词，其后不能加名词。

用法: 在做题时如何判断该使用形容词性物主代词还是名词性物主代词？

空后有名词，则用形容词形容主代词; 空后无名词，则用名词性物主代词。

eg: Is this pencil? (you) 答案: your

That's eraser. (she) 答案: her

This book isn't . (I) 答案: mine

That school bike is . (she) 答案: hers