人教英语选修7unit1grammar(共35张)课件

1、选修7 Unit2 Grammar24 九月 20221Grammar Passive Voice (I)including the infinitive24 九月 20222一.复习被动语态（Revise the Passive Voice）英语动词有主动语态（the active voice）和被动语态(the passive voice)两种形式.主动语态表示主语是动作的执行者；被动语态表示主语是动作的承受者.如：Everyone enjoys exciting sports.（主动语态） Exciting sports are enjoyed by everyone.(被动语态)24

2、九月 20223转换规则：用公式表示为:(主动)S+V+O S(O)+V(be+ V -ed)+ by+O(S)，如：Miss Li is teaching music now. Music is being taught ( by Miss Li) now.24 九月 20224一般进行完成现在am/is/are done过去was/were done将来shall/will be done24 九月 20225时式二.常见主被动时态变化一览表am/is/are being donehas/have been donewas/were being donehad been doneshall

3、/will have been done二、许多不及物动词加上介词或副词而变为及物短语动词，这时同样可以有被动语态。但应注意短语的整体性，在变为被动语态时不应丢掉后边的介词或副词。 1动词介词 aThe doctor has already been sent for bThe news has never been heard of before 类似的短语动词有：call on，look after，talk about，look at，ask for，wait for 24 九月 202262动词副词 aA new play will be put on (上演) next week b

4、The problem has been worked out 类似的短语动词有：put off (推迟)，think over，take off (脱、取消)，look up (查询)，sell out，use up (用光) 24 九月 202273动词副词介词 aThe poor were looked down upon before liberation解放前穷人被人瞧不起。 bHe was looked up to by everyone他被人们所敬仰。 类似的短语动词有：get out of，look out of，get on with，get along with (与。相处

5、)，catch up with (赶上)，keep up with (跟上) 24 九月 202284动词名词介词 aLin Fen can take good care of your children 1）Your children can be taken good care of by Lin Feng bThey never paid attention to (注意、关注) the matter 1）The matter was never paid attention to 类似的短语动词有：make fun of，make use of，make friends with，ta

6、ke part in (参加)24 九月 20229三. 含有情态动词的动词变成被动语态：情态动词+be +过去分词四. 或类似结构（be going to, have to 等）变成被动语态：This room is going to be painted next week. 这个房间下周粉刷。Go away! I want to be left alone.走开！我想独自待一会儿。This problem can be solved. 这问题可解决。Whats done cannot be undone. 覆水难收。George might be sent to American by

7、his company in August.公司可能八月份派乔治去美国。24 九月 202210五. 不定式被动式的用法:3. 不定式的完成被动式表示其动作发生在谓语动词的动作之前.Eg. He ordered the bridge to be built within the month.他命令在月内建成这座桥.(一般被动式)She was glad to have been given so much help.得到如此多的帮助,她很高兴.(完成被动式)1. 不定式与其逻辑主语之间是被动关系时(即，其逻辑主语是不定式动作的承受者）,要用不定式的被动式.2. 不定式的一般被动式表示其动作与谓

8、语动词的动作同时发生或在其后发生;24 九月 202211动词不定式的主动被动结构变化一览表一般式进行式完成式主动to doto be doingto have done被动24 九月 202212to be doneto have been done(1)The meeting to be held is of great importance.(2)This house seems to have been built by a good architect.More examples:24 九月 202213通常在believe, suppose, say, report等动词构成的句子

9、中可以进行主动语态到被动语态以及被动语态和动词不定式的转换.如：They say that Mike is sick in bed.It is said that Mike is sick in bed.Mike is said to be sick in bed.据说麦克卧床不起.People believe that he was killed.It is believed that he was killed.He is believed to have been killed.大家相信他被杀了.24 九月 202214在使役动词have, make, get以及感官动词see, wat

10、ch, notice, hear, feel, observe等后面不定式作宾语补语时，在主动结构中不定式to要省略，但变为被动结构时，要加 to. They make her clean the floor. She is made to clean the floor by them. We saw a stranger walk into the building. A stranger was seen to walk into the building.24 九月 202215The letter is to be sent.24 九月 202216The kitchen needs

11、to be cleaned24 九月 202217The car needs to be repaired.24 九月 202218The hostess refused to be interviewed24 九月 202219 1. I hurried to the meeting hall, only_ that the meeting had been put off. A. to tell B. to be told C. telling D. told24 九月 202220B2. She will stop showing off if no notice_ of her. A)

12、 is taken B) takes C) will be taken D) has taken A24 九月 202221 3. With a lot of problems_, the newly-elected president is having a hard time. A. settled B. settling C. to settle D. being settled24 九月 202222C4. Diamond _in Brazil in 1971. A) is found B) has been found C) was found D) had been found C

13、24 九月 2022235. In order to gain a bigger share in the international market, many state run companies are trying _their products more competitive. ( 2002上海春季高考) A. to make B. making C. to have made D. having made24 九月 2022246.“Have you moved into the new flat?” “Not yet. The room_.” A) has been paint

14、ed B) is painted C) paints D) is being painted D24 九月 202225 7. It is said that plastics can be used to_ many things. Now people are used to_ plastics products. A. make; using B. making; using C. making; use D. make; use24 九月 202226A8. A great number of colleges and universities _since 1949. A) has

15、been establish B) have been established C) have established D) had been established B24 九月 2022279. Allen had to call a taxi because the box was _ to carry all the way home. (MET2003) A. much too heavy B. too much heavy C. heavy too much D. too heavy much24 九月 202228 10. Visitors_ not to touch the e

16、xhibits. A. will request B. request C. are requesting D. are requested24 九月 202229D11. Most environment problems exist because adequate measures for preventing them _taken in the past. A) was not B) were not C) were not being D) had not been B24 九月 202230 12. Do let your mother know all the truth, s

17、he appears_ everything. A. to tell B. to be told C. to be telling D. to have been told24 九月 202231D13.Pluto, the outermost planet of the solar system, _photographically in March 1930. A) discovered B) was discovered C) by discovery D) when discovered B24 九月 20223214. To get a better view of the stage, _. A) our seats had to be changed B) our seats were changed C