【正文】 high time that you should go.我們該去睡覺了。 I’d rather I didn’t see you again. 我倒希望他們和我一起去。（從句說明過去，主句說明過去和現(xiàn)在。If I were you, I would have taken his advice.從句表示現(xiàn)在，主句表示過去如果你聽我的話，現(xiàn)在就不會這么糟糕。 might(C) If the parents ______at the hospital earlier after the accident, the child would have been saved.A. arrives B. arrive C. had arrived D. has arrived(B) If he _________he ___________that food.Luckily he was sent to the hospital immediately.A. was warned。if引導的虛擬條件句區(qū)別:If it rains tomorrow, the crops will be saved. 陳述語氣If it rained tomorrow, the crops would be saved. 虛擬語氣與現(xiàn)在事實相反的虛擬條件句If + 主 + did(were), 主+would/should/could/might +動詞原形1. 如果我是你，我會再試一次。If I were you, I would try it again.，我會買下這架飛機。 would not have taken B. had been warned。If you had listened to me, you might not be in such trouble now.從句表示過去，主句表示現(xiàn)在如果這些天一直沒下雨，我們現(xiàn)在可以進行工作了。）suggest, order, demand, propose, mand, request, desire, insist, require, advice 導的賓語從句要用虛擬語氣，以(should) + v原的形式出現(xiàn)。I would rather they went with me.(1) 對現(xiàn)在的虛擬,謂語動詞用過去時 (系動詞用were),:他看起來好象病了。It’s time that we went to bed.It’s time that we should go to bed. 4. without和but for 構(gòu)成虛擬。 I would like to e. 我愿意來。 A. goes D. is going to go(A)7. C. moves A. listening A. not tell, but an unexpected visitor came to see me.B. listenyou be healthy.C. will go C. be finished He told the story in such minute detail that he might himself have been an eyewitness. 他將那事講的非常仔細，簡直就象他親眼看見一樣 （B）1. It is strange that he If only our parents could live with us!要是我沒錯過火車就好了.If only I hadn’t missed the train!(2) = as long as 常用陳述語氣.如果我們緊密團結(jié)就一定能戰(zhàn)勝一切困難.We can surely overe these difficulties if only we are closely united.6. It’s necessary /strange/ natural/ important + thatClause 從句中的動詞要用虛擬，即（should）+動詞原形It is important that we ( should ) master a foreign language.It is strange that she refuse to e to the party.It’s necessary that we should study hard.7. otherwise 和supposing也可以引導虛擬語氣。He felt as if he alone were responsible for what had happened.(2) 對過去的虛擬謂語動詞使用had+過去分詞, :她英語說的很好就象是在英國學習的一樣。It’s ordered that only German( should ) be taught at schools in Alsas and Lorin.It’s requested that all the students ( should )wear school uniforms at school.以上這些動詞的名詞形式后面的表語從句和同位語從句中也要用虛擬語氣，也應(yīng)以(should) + v原. 的形式出現(xiàn)。 If you had followed my advice, you would be able to finish the work now.如果你當時聽了我的話，現(xiàn)在就能完成這份工作了。 had not taken D. would have been warned。If he had worked hard, he would have passed the examination.，那我是