9年級(jí)unit7GrammarFocusnew

1、Section AGrammar Focus I think students should be allowed to do homework with friends.Sixteen-year-olds should not be allowed to drive.Do you think sixteen-year-olds should be allowed to choose their own clothes?Look at these sentences.情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)肯定句肯定句: : 主語(yǔ)主語(yǔ)+ + 情態(tài)動(dòng)詞情態(tài)動(dòng)詞+be+ +be+ 動(dòng)詞過(guò)去分詞動(dòng)詞過(guò)去

2、分詞. .否定句否定句: : 主語(yǔ)主語(yǔ)+ +情態(tài)動(dòng)詞情態(tài)動(dòng)詞+ +not+ be+ +動(dòng)詞過(guò)去分詞動(dòng)詞過(guò)去分詞. .疑問(wèn)句疑問(wèn)句: : 情態(tài)動(dòng)詞情態(tài)動(dòng)詞+ + 主語(yǔ)主語(yǔ)+ be+ + be+ 動(dòng)詞過(guò)去分詞動(dòng)詞過(guò)去分詞? ?(一一)將主動(dòng)語(yǔ)態(tài)的賓語(yǔ)變成被動(dòng)語(yǔ)態(tài)的主語(yǔ)。將主動(dòng)語(yǔ)態(tài)的賓語(yǔ)變成被動(dòng)語(yǔ)態(tài)的主語(yǔ)。(二二)將含情態(tài)動(dòng)詞的主動(dòng)句式變成被動(dòng)句式，將含情態(tài)動(dòng)詞的主動(dòng)句式變成被動(dòng)句式，即：即：“情態(tài)動(dòng)詞情態(tài)動(dòng)詞+動(dòng)詞原形動(dòng)詞原形”變成變成“情態(tài)動(dòng)詞情態(tài)動(dòng)詞+be+過(guò)去分詞過(guò)去分詞”，然后再在其后加，然后再在其后加“by+主主動(dòng)句中的主語(yǔ)動(dòng)句中的主語(yǔ)(人稱代詞用賓格人稱代詞用賓格)”。by短語(yǔ)短語(yǔ)也可

3、省略。也可省略。 請(qǐng)看下列各句：請(qǐng)看下列各句：轉(zhuǎn)變方法轉(zhuǎn)變方法You should finish your homework first.Your homework should be finished (by you) first. You can take this magazine home. This magazine can be taken home (by you). 含情態(tài)動(dòng)詞的疑問(wèn)句、否定句的變化均需借含情態(tài)動(dòng)詞的疑問(wèn)句、否定句的變化均需借助于情態(tài)動(dòng)詞完成。助于情態(tài)動(dòng)詞完成。 1. 一般疑問(wèn)句一般疑問(wèn)句：直接將被動(dòng)語(yǔ)態(tài)的陳述句中：直接將被動(dòng)語(yǔ)態(tài)的陳述句中的情態(tài)動(dòng)詞提前。的情態(tài)

4、動(dòng)詞提前。 Must this task be finished at once? 這項(xiàng)任務(wù)必須立即完成嗎？這項(xiàng)任務(wù)必須立即完成嗎？句式變換句式變換注意：含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)的一般疑問(wèn)句注意：含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)的一般疑問(wèn)句的回答，應(yīng)保留原情態(tài)動(dòng)詞，但的回答，應(yīng)保留原情態(tài)動(dòng)詞，但must表表“必必須須”時(shí)，其否定回答應(yīng)用時(shí)，其否定回答應(yīng)用neednt；need表表“必要必要”時(shí)，其肯定回答應(yīng)用時(shí)，其肯定回答應(yīng)用must。如：。如： - Must my exercise book be handed in now? 我的練習(xí)本必須現(xiàn)在上交嗎？我的練習(xí)本必須現(xiàn)在上交嗎？ - Yes, it mus

5、t. 是的，必須現(xiàn)在上交。是的，必須現(xiàn)在上交。 （No, it neednt. 不，不必現(xiàn)在上交。）不，不必現(xiàn)在上交。） - Need he be operated on at once? 他必須立即手術(shù)嗎？他必須立即手術(shù)嗎？ - Yes, he must. 是的，他必須。是的，他必須。 （No, he neednt. 不，他不必。）不，他不必。） 2. 特殊疑問(wèn)句特殊疑問(wèn)句 ：由特殊疑問(wèn)詞加上被動(dòng)語(yǔ)態(tài)由特殊疑問(wèn)詞加上被動(dòng)語(yǔ)態(tài)的一般疑問(wèn)句構(gòu)成。的一般疑問(wèn)句構(gòu)成。 When must this task be finished? 這項(xiàng)任務(wù)必須在什么時(shí)候完成？這項(xiàng)任務(wù)必須在什么時(shí)候完成？3. 否定

6、句否定句： 在情態(tài)動(dòng)詞后面加上在情態(tài)動(dòng)詞后面加上not或或never即可，但即可，但must表表必要必要時(shí)否定式為時(shí)否定式為neednt。 This task neednt be finished at once. 這項(xiàng)任務(wù)沒(méi)必要立即完成。這項(xiàng)任務(wù)沒(méi)必要立即完成。 4. 反意疑問(wèn)句反意疑問(wèn)句：借助情態(tài)動(dòng)詞構(gòu)成附加疑問(wèn)：借助情態(tài)動(dòng)詞構(gòu)成附加疑問(wèn)部分。如：部分。如： This bridge can be built next year, cant it? 這座橋明年能建成，是嗎？這座橋明年能建成，是嗎？ Teenagers should be allowed to choose their own

7、 clothes. 青少年應(yīng)該被允許選擇他們自己的服裝。青少年應(yīng)該被允許選擇他們自己的服裝。Students should not be allowed to have part-time jobs. 學(xué)生們不應(yīng)該允許做兼職工作。學(xué)生們不應(yīng)該允許做兼職工作。Can these books be taken out of the reading room? 可以把這些書帶出閱覽室嗎？可以把這些書帶出閱覽室嗎？When must the work be finished? 這些工作必須什么時(shí)候完成？這些工作必須什么時(shí)候完成？ Young trees should _ every year. A.

8、be planted B. planted C. plant . 按要求完成下列各句每空一詞含縮寫。按要求完成下列各句每空一詞含縮寫。 1. We must do the work right now. (改為被動(dòng)改為被動(dòng)語(yǔ)態(tài)語(yǔ)態(tài)) _ _ _ _ _ right now. AThe work must be done. 選擇最佳答案。選擇最佳答案。 2. Teenagers should be allowed to go out with their friends on school nights. (改為否定句改為否定句 )Teenagers _ _ _ to go out with t

9、heir friends on school nights. 3. A book should be read each month. (改為一改為一般疑問(wèn)句般疑問(wèn)句) _ _ _ _ _ each month?shouldnt be allowedShould a book be read【2011天津天津】39. Today a lot of information can _ online. A. receive B. be received C. is received D. receiving答案：答案：B 【解析解析】 被動(dòng)語(yǔ)態(tài)。今天有很多信息能在網(wǎng)上收到，被動(dòng)語(yǔ)態(tài)。今天有很多信息

10、能在網(wǎng)上收到，信息被收到要用被動(dòng)語(yǔ)態(tài)。含有情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)信息被收到要用被動(dòng)語(yǔ)態(tài)。含有情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)的構(gòu)成：情態(tài)動(dòng)詞的構(gòu)成：情態(tài)動(dòng)詞+be +過(guò)去分詞。過(guò)去分詞?！?011浙江金華浙江金華】22. Must we clean the classroom now? No, you neednt. It _ after school. A. may clean B. must clean C. need be cleaned D. can be cleaned答案：答案：D 【解析解析】由句意可知由句意可知it指指classroom，it和和clean為被動(dòng)為被動(dòng)關(guān)系，所以用被動(dòng)語(yǔ)態(tài)，含有情

11、態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)關(guān)系，所以用被動(dòng)語(yǔ)態(tài)，含有情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)結(jié)構(gòu)為結(jié)構(gòu)為“情態(tài)動(dòng)詞情態(tài)動(dòng)詞+be+動(dòng)詞過(guò)去分詞動(dòng)詞過(guò)去分詞”。排除。排除A和和B。need意為意為“需要需要”，can意為意為“可能，可以可能，可以”。由句。由句意意“我們必須現(xiàn)在就打掃教室嗎？我們必須現(xiàn)在就打掃教室嗎？不，不必要。不，不必要?？梢苑艑W(xué)打掃可以放學(xué)打掃”可知可知, 故選故選D。【2013山東青島山東青島】 The song reminds me of my old school days as soon as it _. A. is played B. plays C. will be played D. will

12、 play答案：答案： A【解析解析】考查被動(dòng)語(yǔ)態(tài)的用法。句意：這考查被動(dòng)語(yǔ)態(tài)的用法。句意：這首歌被播放的時(shí)候，使我想起了我的學(xué)生首歌被播放的時(shí)候，使我想起了我的學(xué)生時(shí)代。時(shí)代。it作作play的承受者，故用被動(dòng)語(yǔ)態(tài)。的承受者，故用被動(dòng)語(yǔ)態(tài)?！?013浙江寧波浙江寧波】Have you finished your project? Not yet. Ill finish it if I _ ten more minutes. A. give B. am given C. will give D. will be given答案：答案：B【解析解析】考查動(dòng)詞的被動(dòng)語(yǔ)態(tài)。句意考查動(dòng)詞的被動(dòng)語(yǔ)態(tài)。句

13、意“如果如果再給我十分鐘我會(huì)完成它。再給我十分鐘我會(huì)完成它?！敝髡Z(yǔ)與動(dòng)詞主語(yǔ)與動(dòng)詞give之間是被動(dòng)關(guān)系，在條件狀語(yǔ)從句中用之間是被動(dòng)關(guān)系，在條件狀語(yǔ)從句中用一般現(xiàn)在時(shí)表將來(lái)。一般現(xiàn)在時(shí)表將來(lái)?！?013福建泉州福建泉州】 If we take a shower instead of bath, more water _. I agree with you. A. has saved B. can save C. can be saved答案：答案： C【解析解析】考查被動(dòng)語(yǔ)態(tài)。句意：考查被動(dòng)語(yǔ)態(tài)。句意：如果如果我們用淋浴而不是在浴缸里沐浴的話，會(huì)我們用淋浴而不是在浴缸里沐浴的話，會(huì)節(jié)省更多的

14、水。節(jié)省更多的水。我贊同你的看法。情我贊同你的看法。情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)的構(gòu)成是：情態(tài)動(dòng)詞態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)的構(gòu)成是：情態(tài)動(dòng)詞+be +動(dòng)詞的過(guò)去分詞。動(dòng)詞的過(guò)去分詞。 1. Their work must _ (finish) by four oclock. 2. Your homework should _ (do) by yourself. 3. These books mustnt _ (take) out of the reading room.4. Should these food _ (keep) dry?be finished be done be taken be kept 用

15、所給詞的適當(dāng)形式填空。用所給詞的適當(dāng)形式填空。 . 句型轉(zhuǎn)換句型轉(zhuǎn)換1. You should make up the bed every day. (改改為被動(dòng)語(yǔ)態(tài)為被動(dòng)語(yǔ)態(tài)) The bed _ _ _ up every day. 2. We cant see stars in the day time. (改為被改為被動(dòng)語(yǔ)態(tài)動(dòng)語(yǔ)態(tài)) Stars _ _ _ in the day time. 3. You must return the book on time. (改為一改為一般疑問(wèn)句般疑問(wèn)句) _ the book _ _ on time? should be madecant be

16、seenMustbe returned2. Parents should encourage teenagers to do social work for their community.3. Do you think Lucys parents might allow her to go to the party?Teenagers should be encouraged to do social work for their community.Do you think Lucy might be allowed by her parents to go to the party?4a

17、4a Rewrite the sentences according to the example.4. Do you think we must keep teenagers away from the Internet?5. Parents should give teenagers chances to make their own decisions.Do you think teenagers must be kept away from the Internet?Teenagers should be given chances by parents to make their o

18、wn decisions.The keysThe keys be askedare allowed4b4b Fill in the blanks with the correct forms of the words in brackets.be educatedstartmovetakecontinue 翻譯下列句子。翻譯下列句子。1. 青少年需要被好好地教育。青少年需要被好好地教育。_2. 這輛小汽車不能修了。這輛小汽車不能修了。_3. 這封信必須現(xiàn)在寄出去嗎？這封信必須現(xiàn)在寄出去嗎？_4. 會(huì)議應(yīng)該在哪舉行？會(huì)議應(yīng)該在哪舉行？_Teenagers need to be educated

19、well. This car cant be repaired.Must this letter be posted now?Where should the meeting be held?1.You must give back the dictionary before Friday.(改為被動(dòng)語(yǔ)態(tài)改為被動(dòng)語(yǔ)態(tài))The dictionary must _ _ back before Friday.2. He should be told about the meeting.(改為一改為一般疑問(wèn)句般疑問(wèn)句)_ he _ told about the meeting? 按要求完成句子。按要求完成句子。(每空一詞每空一詞) be givenShould be3. The machine can be used for washing dishes.(對(duì)畫線部分進(jìn)行提問(wèn)對(duì)畫線部分進(jìn)行提問(wèn))_ _ the machine _ used f