虛擬語氣學(xué)習(xí)ppt課件(已修改)
2025-02-01 00:03 本頁面
【正文】 虛擬語氣 1） 概念 虛擬語氣用來表示說話人的主觀愿望或假想，所說的是一個條件，不一定是事實(shí)，或與事實(shí)相反。 2） 在條件句中的應(yīng)用 條件句可分為兩類，一類為真實(shí)條件句，一類為非真實(shí)條件句。非真實(shí)條件句表示的是假設(shè)的或?qū)嶋H可能性不大的情況，故采用虛擬語氣。 在條件狀語從句和結(jié)果狀語從句中 ,表示與事實(shí)相反的條件和結(jié)果。 1) 與現(xiàn)在事實(shí)相反： If 主語 …, 主語 +V原 were Ved should (would could, might) 2) 與過去事實(shí)相反： ?If 主語 , 主語 +have Ved 3) 與將來事實(shí)相反： ?If 主語 …, 主語 +V原 should (would could, might) should were to should (would could, might) had Ved 虛擬語氣假設(shè)條件句型注意點(diǎn)： 1. 假設(shè)條件從句謂語動詞發(fā)生的時間與主句所假設(shè)的謂語動詞不一致，叫做錯綜條件虛擬語氣。主句和從句的謂語動詞要依照假設(shè)的時間而定。 If the weather had been finer, the crops would be growing still better. If you had followed the teacher’s advice, you wouldn’t be in the hospital. 2. 假設(shè)條件虛擬倒裝。 條件從句中有should， were， had三個助動詞可以把 if省略，并將這三個詞提至句首。 If I were you, I would give it up. Were I you, I would give it up. If it were not for your advice, we couldn’t have got over the difficulties. Were it not for your advice, we couldn’t have got over the difficulties. If I had had time, I would have run round that lake again. Had I had time, I would have run round that lake again. If there should be a flood, what should we do? Should there be a flood, what should we do? 注意： 在虛擬語氣的從句中，動詞 39。be39。的過去時態(tài)一律用 were，不用 was， 即在從句中 be用 were代替。 If I were you, I would go to look for ，就會去找他。 If he were here, everything would be all right. 如果他在這兒，一切都會好的。 典型例題 _____ to do the work, I should do it some other day. A. If were I B. I were C. Were I D. Was I 在虛擬條件狀語中如果有 were, should, had這三個詞主語提前 , 變成 were, should, had +主語的形式。但要注意，在虛擬條件狀語從句中，省略連詞的倒裝形式的句首不能用動詞的縮略形式。如我們可說 Were I not to do., 而不能說 Weren39。t I to do. 1. Had you listened to the doctor, you _________ all right now. A. are B. were C. would be D. would have been 2. __________ any change about the date, please tell me immediately. A. Will there be B. Should there be C. There will be D. There should be 3. __________ today, he would get there by Friday. A. Would he leave B. Was he leaving C. Were he to leave D. If he leave 4. Should it rain, the crops _____ . A. would be saved B. would have been saved C. will b
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