英語(yǔ)北師大版選修7 Unit21 Lesson 1 《Super Athletes》 教案3

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111 Unit 21 Lesson 1 Grammar :Conditionals Revision 1．條件句有兩類(lèi)，一類(lèi)是真實(shí)條件句，一類(lèi)是虛擬條件句。 2．如果假設(shè)的情況是有可能發(fā)生的，就是真實(shí)條件句（Zero conditional）。真實(shí)條件句中的謂語(yǔ)用陳述語(yǔ)氣。 Eg。If it doesn’t rain tomorrow, we will go to the par. 如果明天不下雨,我們就去公園. 3.如果假設(shè)的情況是過(guò)去或現(xiàn)在都不存在的,或?qū)?lái)不大可能發(fā)生的,則是虛假條件句,共有三種情況. Eg. If he had seen you yesterday, he would have asked you about it. 如果他昨天見(jiàn)到你,他會(huì)問(wèn)你這件事的.(事實(shí)上他昨天沒(méi)有見(jiàn)到你,因此也未能問(wèn)你這件事.) 4.在含有虛擬條件句的復(fù)合句中,主句和從句的謂語(yǔ)都要用虛擬語(yǔ)氣.虛擬條件從句和主句的動(dòng)詞形式列表如下: 時(shí)間 從句 主句 與現(xiàn)在事實(shí)相反 動(dòng)詞過(guò)去式(be動(dòng)詞的過(guò)去式一般用were) would(should/could/might)+動(dòng)詞原形 與過(guò)去事實(shí)相反 Had+過(guò)去分詞 would(should/could/might)+had過(guò)去分詞 與將來(lái)事實(shí)相反 動(dòng)詞過(guò)去式/should+動(dòng)詞原形 were to+動(dòng)詞原形 would(should/could/might)+動(dòng)詞原形 5.虛擬條件句的用法 1)????? 表示與現(xiàn)在事實(shí)相反的假設(shè)和結(jié)果(1st conditional) Eg. If I were you,I should/could/would/might tell him the truth. 如果我是你,我就會(huì)/可能對(duì)他說(shuō)實(shí)話. If he had time, he would/could/might go with you. 如果他有時(shí)間,他就會(huì)/可能和你一起去. If my brother were here,everything would be all right. 要是我哥哥在這兒,一切都沒(méi)問(wèn)題了. 2)????? 表示與過(guò)去事實(shí)相反的假設(shè)和結(jié)果(2nd conditional) Eg. If you had taken my advice, you wouldn’t/couldn’t have failed in the exam. 如果你按照我的建議去做,你不會(huì)/不可能考試不及格. If I had had the money last week,I should/would/could/might have bought a car. 如果我上星期有了這筆錢(qián),我就會(huì)/可能買(mǎi)輛車(chē). She would/could/might have telephoned you immediately,if she had won the game. 如果她比賽贏了,她就會(huì)/可能給你打電話. If you had come a few minutes earlier, you would/could/might have met the famous singer. 如果你早來(lái)幾分鐘的話,你就會(huì)/可能會(huì)見(jiàn)到那個(gè)著名的歌唱家. 3)????? 表示與將來(lái)事實(shí)可能相反的假設(shè)和結(jié)果(3rd conditional) Eg. If it were Sunday tomorrow, I should/would/could/might go to see my grandmother. 如果明天是星期天,我就/可能去看我的奶奶. If it were to snow this evening,they would not go out. 如果今晚下雪,他們就不出去了. If it should rain,the crops would/could/might be saved. 如果下雨,莊稼就一定/可能有救. 6.主,從句的動(dòng)作發(fā)生時(shí)間不一致的情況(mixed conditional) 有時(shí)條件從句中的動(dòng)作和主句中的動(dòng)作發(fā)生的時(shí)間不一致,這時(shí)動(dòng)詞的形式要根據(jù)它所表示的時(shí)間加以調(diào)整. Eg. If you had listened to the doctor, you would be all right now. 如果你當(dāng)初聽(tīng)了醫(yī)生的話,身體現(xiàn)在就好了.(從句動(dòng)作指過(guò)去,主句動(dòng)作指現(xiàn)在) If you had practiced speaking English more, you would be able to speak it fluently. 如果你多練習(xí)講英語(yǔ),現(xiàn)在就能講得很流利了. 111