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1、 專題二 第5講 [小題夯基練] 單句語法填空 1．They ________ (arrive) at suppertime but their flight was delayed. 解析：should have arrived　[should have done sth.意為“(過去)本應(yīng)該做某事而未做”，分析句意可得出答案。] 2．Maybe if I ________ (study) science，and not literature then，I would be able to give you more help. 解析：had studied　[根據(jù)th

2、en一詞可確定此處表示與過去事實(shí)相反，故if引導(dǎo)的從句部分用had done形式。] 3．Teachers recommend parents ________ (not allow) their children to watch too much TV. 解析：(should) not allow　[recommend，suggest，advise，order，request，insist等表示“建議、命令、要求”等意思的動(dòng)詞，后接賓語從句時(shí)，賓語從句的謂語動(dòng)詞常用“should＋動(dòng)詞原形”，should可省略，此處表示老師建議家長(zhǎng)不允許孩子看太多電視。] 4．He always a

3、cts as if he ________(know) everything. 解析：knew　[在as if引導(dǎo)的方式狀語從句中，用一般過去時(shí)表示與現(xiàn)在事實(shí)相反。] 5．If we had taken such effective measures much earlier，the river ________ (not pollute) so seriously now. 解析：would not be polluted　[從句表示與過去事實(shí)相反，由now可知，主句表示與現(xiàn)在事實(shí)相反，故主句謂語動(dòng)詞用“would＋動(dòng)詞原形”，且river與pollute構(gòu)成被動(dòng)關(guān)系。] 6．—Wh

4、at will you do during the summer holiday? —I don't know，but it's high time that I ________ (decide) something. 解析：decided/should decide　[在It's (high) time that...中，that從句應(yīng)用虛擬語氣，從句謂語用should do或過去式。] 7．—Where have you been? —I ________ (stick) in the heavy traffic.Otherwise I ________ (come) here

5、 earlier. 解析：was/got stuck；would have come　[第一空表示過去的一個(gè)客觀事實(shí)，用一般過去時(shí)；第二空表示與過去相反的虛擬語氣主句用would have done結(jié)構(gòu)。] 8．—Would you mind if I set out earlier tomorrow morning? —Well，I would rather you ________ (not do)． 解析：didn't　[would rather后的賓語從句需用虛擬語氣，表示與現(xiàn)在或?qū)硎聦?shí)相反，謂語動(dòng)詞用一般過去式。] 9．I ________ (not decide) to

6、 give a try，but for the teacher who kept insisting on my “going for it”． 解析：wouldn't have decided　[but for后的真實(shí)句表示過去的情況，故空格處的虛擬主句用would have done結(jié)構(gòu)。] 10．Had I known about this computer program，a huge amount of time and energy ________ (save) then. 解析：would/could/might have been saved　[if虛擬條件句的倒裝結(jié)構(gòu)

7、和主句均是對(duì)過去情況的虛擬，且主語time and energy 和動(dòng)詞save構(gòu)成被動(dòng)關(guān)系。] [大題提能練] 語法填空——情態(tài)動(dòng)詞和虛擬語氣專練 　Lucy is an outgoing lady.She __1__ play many kinds of musical instruments.Actually，she __2__ play the piano when she was 8 years old.Lucy also keeps taking exercise every day.She says that she has to do some sports becaus

8、e she __3__ keep slim.“You __4__ get fat soon if you don't take exercise every day.”She usually says to her friends. As for her，an elegant lady should try to keep fit.However，last week，she found that she __5__ put on weight and her husband suggested that she __6__ lose weight.And these days she'd r

9、ather that she __7__ (take) more exercise every day.However，she is always lacking in time because she has to take care of her children. One night after supper，she walked quickly in order to go dancing at the Tomorrow Park and she was late.On her way，she thought that the dancing must __8__ (begin)，and the coach __9__ have taught or shown many new moves.She was afraid tha her friends might __10__ (leave)before she got there.She was regretful then. 答案：1.can　2.could　3.must　4.shall　5.might　6.should　7.took　8.have begun　9.could　10.have left