7A Unit3 英语语法和相应练习

1、7AUnit 31. 时间介词 at, on, in(1) at +时间点 six oclock /四餐breakfast,lunch,supper,dinner/节日Christmas，Mid-Autumn Festival/年龄;还可以at this time/at that time (2) on+星期/日期(3) in+一天中的一部分/月份/季节/年时间介词用法口诀：年前周前要用in，具体日子要用on, 遇到几号要用on, 上午下午有事in， 要说某日上下午， 用on换in记清楚， 午夜黄昏用at，黎明用它也不错，At用在时分前，说“差”可要用上to,说“过”要用past. 拓展：方位

2、介词Above：在上方（不一定垂直）eg.The moon is above our school.Over：垂直的正上方eg.There is a bridge over the river.On：接触的上方eg.There is a book on the desk.Below：在下方（不一定垂直）18 岁以下Under：垂直的正下方18岁以上（换句话说，表示正下方，两者都可用；不表示正下方，则通常用below。）Beside：在近旁，在旁边 Next to：紧邻着Outside：在外面，在室外 Inside：在。的里面，在。内部In front of：在前面（物体外部的前面） 教室前面有

3、一棵树。_In the front of：在前面（物体内部的前面） 教室前面有一个黑板。 Behind：在后面Between：在两者中间 betweenandAmong：在三个或者三者以上之间2. 疑问词：what, which, who, whose, when, where, why, how（1） what: 活动或事情（2） which: 事或人（3） Who: 人（4） Whose：拥有的，所有的（5） When: 时间（6） Where：地点（7） Why: 原因（8） How: 方式3. some, any 的用法（1） 一般说来，some用于肯定句，any用于否定句和疑问句。例

4、如： Here are some beautiful flowers for you. Here arent any beautiful flowers.（2） any的其他适用情况： any可与not以外其他有否定含义的词连用，表达否定概念。例如： He never had any regular schooling. In no case should any such idea be allowed to spread unchecked. The young accountant seldom (rarely, hardly, scarcely) makes any error in

5、his books. I can answer your questions without any hesitation. any可以用于表达肯定的条件从句中。例如： If you are looking for any stamps, you can find them in my drawer. If there are any good apples in the shop, bring me two pounds of them. If you have any trouble, please let me know.（3）some的其他适用情况： 在下列场合，some也可用于疑问句

6、。 说话人认为对方的答复将是肯定的。例如： Are you expecting some visitors this afternoon?（说话人认为下午有人要来，所以用some） Are you expecting any visitors this afternoon?(说话人不知道下午是否有人来，所以用any) Didnt you give him some tickets?(说话人认为票已经给他了。问题的回答是：Sure I did) Did you give him any tickets?（说话人不知道是否给票了。回答可能是yes或no。） 款待用语或问句的实质等于提出一个要求并希

7、望得到肯定的回答时。例如： Wont you have some more tea? Will you buy me some paper? 这类用语中的some不能用any代替。在“Let me know if you need any help.”这类条件句中，可用some代替any。 用any表示说话人完全不知道对方是否需要帮助，或表示说话人愿意向对方提供无限量的 帮助。 Let me know if you need any help. 用some 则表示提供对方某种程度的、确定的帮助，或者表示期待肯定的回答。 Let me know if you need some help.介词练

8、习1. China lies _ the east of Asia and _ the north of Australia.A. to; to B. in; to C. to; in D. in; on2. _ the afternoon of March 8, the women in the city had a big party.A.To B. In C. At D. On3. Wheres Lily? We are all here _ her.A. besides B. about C. except D. with4. Mum, today is Mothers Day. Mi

9、ke and I want to invite you to have dinner _ us at Shanghai Restaurant, which is famous _ its seafood.A. with; of B. with; for C. for; to D. to; for5. He has got a chair to sit _, but nobody to talk _.A. on; to B. /; with C. on; / D. /; to6. English is widely used _ travelers and business people all

10、 over the world.A. toB. forC. as D. by7.Its kind _ you to come to see me. Its a pleasure. You were so kind _ me.A. of; with B. for; withC. of; to D. for; to8.Is the manager in?Sorry, he is out. But he will be back _ three oclock.A. inB. onC. untilD. before9. _ the age of fifteen, she had written sco

11、res of articles for a newspaper.A. AtB. BeforeC. SinceD. By10.Bob, you are wanted _ the phone.Thanks a lot.A. onB. byC. ofD. for11. The soil is made _ the dead leaves of the trees.A. up ofB. ofC. fromD. by12. We cant do it _ your help.A. with B. of C. under D. without13. You must stand _ line when you are waiting _ a bus. A. on; inB. in; forC. in; onD. on; for14. Its very nice _ you to get me two tickets _ the World Cup. A. for; ofB. of; forC. to; forD. of; to15. We should do something to stop sandstorms _ happening again and again. A. fromB