单元语法精讲精练
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Unit 12Life is full of the unexpected.第三课时Section A(Grammar Focus-4c)—单元同步语法精讲精练概念:过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作。
它表示动作发生的时间是过去的过去。
结构①肯定句:主语+had+过去分词+其他.②否定句:主语+had not+过去分词+其他.③一般疑问句:Had+主语+过去分词+其他?用法归纳①常与before,by,by the time,by the end of等引导的时间状语(从句)连用。
状语从句的谓语动词常用一般过去式。
eg:By the time I was six,I had started playing table tennis.到我六岁时,我已经开始学习打乒乓球了。
②表示从过去某一时间开始,持续到过去另一时间的动作或状态。
与“for+时间段”连用,谓语动词用延续性动词。
eg:He had been ill for a week when we learned about it.当我们知道这件事时,他已经病了一周了。
③主句谓语动词为一般过去时(如said,asked,found,told,thought等),其后的宾语从句通常用过去完成时。
eg:Mr. Zhang said that he had lived in this city for ten years.张先生说他已经在这个城市住了十年。
④在含有定语从句的复合句中,如果叙述的是过去的事,先发生的动作常用过去完成时。
eg:At that moment,I was replying to the e-mail that had arrived two days before.那时我正在回复两天前收到的电子邮件。
⑤在and或but连接的并列句中,如果前一个并列句为一般过去时,且后一个并列句中的动作早于前一个并列句中的动作,那么后一个并列句要用过去完成时。
Unit3 语法精讲精练Grammar in UseA. Multiple choices.( ) 1. My parents and I have many different ideas _______different ways.A. atB. inC. toD. on( ) 2. Both she and I _______ from Canada.A. isB. amC. areD. be( ) 3. My shoes are cheaper than_______.A. youB. yourC. yoursD. your one( ) 4. Mary has lots of friends, but I don’t. Mary is_______ than me.A. quieterB. more seriousC. more popularD. funnier( ) 5. My best friend is good _______swimming, but I do well_______ running.A. at, inB. in, atC. at, atD. in, in( ) 6. Which subject do you like___ English or Chinese?A. goodB. wellC. betterD. best( ) 7. I like talking with others. But Tom doesn’t. He often reads books. So Tom is _______than I am.A. funnierB. more outgoingC. wilderD. calmer( ) 8. John can’t get up as_______ as his little sister.A. earlierB. earlyC. more earlyD. very earlyB. Complete the sentences using proper forms of the given words.1. Tom is_______ (athletic) than Jim.2. Lucy enjoys _______ (tell) jokes. She is much_______ (funny) than others.3. Mr. Green is not as_______ (serious) as Mr. Brown.4. Jim can’t run_______ (fast) than Jill.5. Mary is very_______ (outgoing).6. Unit4 is_______ (difficult) than Unit 5.7. There are_______ (many) boys in our class than in theirs.参考答案Grammar in UseA1-5 B C C C A 6-8 C D BB 1. more athletic 2. telling, funnier 3. serious 4. faster 5.outgoing6. more difficult7. more8. larger9. heavier 10. biggerC 2. Does Jack run as fast as Sam? faster3. Is your cousin as outgoing as you? more outgoing。