模塊六unit3 虛擬語氣課件

1、Unit 3Understandingeach otherGrammar and usageUnreal conditionals(the subjunctive mood)虛擬語氣觀察下列兩個(gè)句子，根據(jù)體會(huì)說出它們的差異：1. If it rains tomorrow, we will not climb the mountain. 2.If it rained tomorrow, we would not climb the mountain. real conditionalunreal conditionalthe subjunctive mood 語氣（mood）也是動(dòng)詞的一種形式變

2、化。它表示說話者對所指的動(dòng)詞或狀態(tài)所持的態(tài)度，而且，在謂語動(dòng)詞上有所體現(xiàn)，語氣可分為三種：陳述語氣、祈使語氣和虛擬語氣。 Introduction 例1：These doggies are sleeping very soundly. （陳述語氣） 例2：Stop laughing!（祈使語氣） If you kept beating me like this, I would tell your teacher.例3：（虛擬語氣） 如果條件句假設(shè)的情況完全不存在或者實(shí)現(xiàn)的可能性很小,甚至可以說幾乎沒有時(shí), 就需要用虛擬語氣來表達(dá), 也就是說,此時(shí)的條件句是非真實(shí)條件句。非真實(shí)條件句的謂語動(dòng)詞

3、形式：注意: 在非正式表述或口語中，if I/he/she/it之后, 可用was代替were。兩者在意義上沒有區(qū)別，但是were更為正式，特別是在表述心存懷疑的事情時(shí)：If Lucy were ready, we would start.假如露西準(zhǔn)備好了，我們就出發(fā)。與將來事實(shí)相反的條件句的結(jié)構(gòu)：條件句：Ifwas/were/did主句：would/could/might doIf it were sunny tomorrow, we would go camping.If I were free next Sunday, I would certainly go to your party

4、.注意:在與將來事實(shí)可能相反的條件句中,謂語動(dòng)詞還可用were to 或should +do來表示,如:If I were to fail my driving test, I would have to take it again next month.If he should come tomorrow, I would talk to him about it.If 從 句主 句與現(xiàn)在事實(shí)相反謂語動(dòng)詞用-謂語動(dòng)詞用-與過去事實(shí)相反謂語動(dòng)詞用-謂語動(dòng)詞用- 與將來事實(shí)相反謂語動(dòng)詞用-謂語動(dòng)詞用- 1)did2)be動(dòng)詞用 wereshould/would/ could/ might + d

5、oshould/would/ could/ might + doshould/would/could/ might +have + done1) did/were2)should do3) were to dohad + doneSummary注意：1. 除了if 外，還要關(guān)注其它幾個(gè)連詞，suppose, supposing,（假如）， provided, providing,(如果），Suppose there were no gravity, objects would not fall to the ground when dropped.2.用在lest(以免，免得）， for fe

6、ar that（唯恐）和in case引導(dǎo)的狀語從句中，這時(shí)謂語動(dòng)詞用（should）+動(dòng)詞原形1）She closed the windows lest she catch cold.2）The boy hid himself behind the door for fear that / in case his father (should) see him.3) Take your raincoat in case/ lest it (should )rain.Practice完成鳳凰學(xué)案p66自主學(xué)習(xí)A. If they had made preparations, they woul

7、d have succeeded. =Had they made preparations, they would have succeeded.They would have succeeded had they made preparations如果虛擬條件句中沒有were, had和should則不能省略if,當(dāng)然也不能倒裝。注意：Practice 1. Were it not for the snowy weather, we _ all right now. A. would be B. would have been C. were D. may be 2. If he _ me

8、tomorrow, I would let him know. A. should call B. should not have been able C. were not able D. are not able AA5. If you had rung us yesterday, we would_ you that the meeting had been put off. A. tell B. have told C. had told D. be tellingB高考鏈接：It might have saved me some trouble _ the schedule.(201

9、5江蘇高考） A. did I know B. have I known C. do I know D. had I known1. It might have saved me some trouble if I had known the schedule.2. If I had known the schedule, it might have saved me some trouble. the schedule, it might have saved me some trouble.(此題考察虛擬語氣表示與過去事實(shí)相反，省略if, 用部分倒裝，但難點(diǎn)是if 從句放在主句后面，看起來不習(xí)慣，有點(diǎn)別扭）D本節(jié)課總結(jié)：今天我們主要學(xué)習(xí)了以下三個(gè)內(nèi)容辨別連詞if 引導(dǎo)的真實(shí)性條件句和非真實(shí)性條件句。掌握虛擬語氣在if 從句中表示與三種事實(shí)相反的用法。（特別是主，從句謂語動(dòng)詞用什么形式）省略if, 助動(dòng)詞were, should, had 放在句首形成部分倒裝的用法。（注意if在主句前，后位置的靈活性）Practice:完成鳳凰