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                2018年△大學英語B級語身上也是黑光隱現法之情態動詞

                發布於 2018-04-27 13:55  編輯:Ywen
                0

                2018年㊣ 大學英語B級語法之情態動詞


                情態動詞用來表示而原本呆在著能力、允許、許諾、可能、必須、勸告、意願等概念ㄨ或態度。情態動詞無人稱變化,在句子中和動詞原形一№起組成謂語。常用的情態動詞有must,can,be able to,need,shall, should(ought to), could,would。

                註意:mustn’t的意思是“禁止”,needn’t的意思是“無須,不必”。


                大學英語B級考試.png


                情態動詞後▲接完成時的用法


                1. must+現在完生命氣息成時結構:這一結構表示對過去一個動作比較有把握的一聲興奮猜測

                :I believe he _______ an accident, otherwise he would have arrived on time.

                A. would have had

                C. should have had

                B. could have had

                D. must have had

                答案為D

                 

                2. should (ought to )have done用來表示本來應該做卻沒有做的事情。

                1:I'm sorry I couldn't get in touch with him before he left,____him earlier.

                    A. had a telephone          B. have phoned

                    C. should have phoned       D. should be phoned

                 

                答案是C

                 

                2: You ought_______the matter to the manager the day before yesterday.

                A. to report

                B. to have reported

                C. to reporting

                D. have reported

                答案:B

                 

                3.could+現在完成時,表示本來能做的事情而沒有做。

                :Mary_____that coat, but she chose to lend the money to a needy neighbour.

                A. could have bought    B. must have bought    C. can buy    D. could buy

                答案為A.

                 

                4.needn't+現在完成時,表示本來不該做的事情卻▂做了。

                :I dressed very warmly for the trip, but I needn't have done so. The weather was hot.


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