高中与英语语法虚拟语气讲解.ppt

语气;虚拟语气; 　一、虚拟语气在条件句中;eg:If I had time, I would attend the meeting. If he had hurried ,he could have caught the train. If I were to go abroad ,I would go to America.;使用虚拟条件句要注意的几点：;２．省略句 在条件句中，可省略 if，把were ,had, should 提到句首，变为倒装句式．;二、虚拟语气在名词从句中的运用;; 3. as if ( as though) 看起来　 常用虚拟形式，即表示与现在事实相反，用过去式； 与过去事实相反用过去完成式 (had done).;4. would rather + 从句　动词用过去式或过去完成时　　; 1. It is (high / about ) time that…从句中的谓语动词用过去式或should＋动词原形，should不能省略．;2.用于表示命令、建议、要求等一类词后面的宾语从句。; 在suggestion / proposal / order / plan / advice / idea / request 等名词后的表语和同位语从句中要用“should＋动词原形”　should可以省略．;A.在句型 “It is important (necessary, strange, natural) that .... ” 中，that 后面的从句中的谓语动词用： should + 动词原形 我们有必要出去散散步。 It’s necessary that we should have a walk now.  2 她这样做是很自然的。 It’s natural that she should do so.  3 重要的是我们要照顾好病人。 It’s important that we should take good care of the patient. ;B. 在It is demanded/suggested/ordered/required…. that-clause句型中从句用(should )+动词原型 It is demanded that we should work out a plan. ; 1. It is (high / about ) time that…从句中的谓语动词用过去式或should＋动词原形，should不能省略．;3. would rather + 从句　动词用过去式或过去完成时　　;5. even if ( even though)即使　;四 情态动词+ have done could have done 本来可以- - - might have done 本来可能 - - - should / ought to have done 本来应该做 - - - shouldn’t / ought not to have done 本不该做 - - 你本不应该告诉她真相。 You shouldn’t have told her the truth . needn’t have done 本不必做 - - - 比较：didn’t need to do 没必要做也没有做 - - - 我没必要擦窗户。我兄弟做了 I didn’t need to clean the windows . My brother did it. would have done 本来会去做----;Choose the best answer: It is strange that the little boy _____ speak two foreign languages. A. could b. can C. should D. would 2. He gave orders that the experiment ____ before 5:30pm. A. be finished B.will finish C. must be finished 3.He _____ you more help,even though he was very busy. A, might have given B. might give C.may have given 4.Without the leadership of the Party,there ____no New China. A.would be B. has been C. should be D.w