unit 21 human biology lesson 1 super athletes b學案一、單項填空1the volleyball match will be put off if it _.awill rainbrainscrained dis rained2if he _ me tomorrow，i would let him know.ashould call bwill callcis calling dwas to call3if the horse won today，it _ thirty races in five years.awould have won bwoncmust have won ddid have won4if you hadnt taken such a long time to get dressed，wed _ there by now.abe bcirclescis circling dbe circling5(2011江西卷)we _ johns name on the race list yesterday but for his recent injury.awill put bwill have putcwould put dwould have put答案：1.b2.a3.a4.a5.d二、用所給動詞的適當形式填空1if i _(be) you，i would not do such a thing.2if i had enough money，i _(offer) her much help.3if you _(come)here earlier，you wouldnt have missed her.4if i _ (know)her address，i would write her a letter.5if she had worked harder，she _(make)it.答案：1.were2.would offer3.had come4.knew 5would have madegrammarif they hadnt invited me to the party，i wouldnt be here；but they invited me to the party so im here now.如果他們沒有邀請我來參加聚會，我就不會在這里，但他們邀請我來參加聚會，所以我現在在這里。if he didnt speak a few languages，he wouldnt have got the new job；but he speaks a few languages so he gets the job.如果他不講多種語言，他不會得到那份新工作，但他講多種語言，所以他得到了那份工作。單一虛擬條件句和混合虛擬條件句1單一虛擬條件句單一虛擬條件句的三種基本類型if條件從句從句的謂語形式主句的謂語形式表示現在情況動詞過去式(be的過去式用were)should/would/could/might動詞原形表示過去情況had過去分詞should/would/could/mighthave過去分詞表示未來情況should動詞原形should/would/could/might動詞原形動詞過去式were to動詞原形if i were you，i would go to see the film lost on journey.如果我是你，我就去看電影人在囧途。if i had time，i would go shopping with you this afternoon.如果我有時間，我今天下午會和你去買東西的。if she should come，i would ask her for help.如果她來，我就向她求助。if our manager hadnt helped me，i wouldnt have succeeded.如果我們的經理沒有幫助我，我是不會成功的。2混合虛擬條件句通常情況下，在非真實條件句中主句和從句的謂語動詞所指時間是一致的，但有時也可能指不同的時間，這時要根據上下文的意思采用不同的謂語動詞形式。如：if i were you，i would have taken his advice.(從句指現在，主句指過去)如果我是你的話，我就接納他的建議。if i had taken my raincoat with me this morning，i would not be wet now.(從句指過去，主句指現在)如果今天早上帶上雨衣的話，我現在就不會淋濕了。if she hadnt told you the news，you wouldnt be upset now.如果她沒有告訴你那個消息，現在你就不會難過了。3虛擬條件句的倒裝虛擬條件句的從句部分如果含有were，should或had，可將if省略，再把were，should或had 移到從句句首，實行倒裝。if it had rained last night，it would be very cold today.had it rained last night，it would be very cold today.如果昨晚下雨了，今天會很冷的。if you had come earlier，you could see him now.had you come earlier，you could see him now.如果你早來一點的話，你現在能夠見到他。if i were you，i wouldnt feel sorry.were i you，i wouldnt feel sorry.我要是你的話，我不會感到抱歉的。單項填空1)it is hard for me to imagine what i would be doing today if i _ in love at the age of seven，with the melinda cox library in my hometown.awouldnt have fallenbhad not fallencshould fall dwere to fall2)i _ sooner but i didnt know that they were waiting for me.ahad come bwas comingcwould come dwould have come3)(2011福建卷)pity you missed the lecture on nuclear pollution.i _ it，but i was busy preparing for a job interview.aattended bhad attendedcwould attend dwould have attended4)i_through that bitter period without your generous help.acouldnt have gone bdidnt gocwouldnt go dhadnt gone5