情态动词专题讲座.ppt

情态动词专题讲座.ppt情态动词专题讲座 can 能 can ’ t 不能 can ’ t be 不可能是 must 必须 mustn ’t不准 must be 肯定是 may 可以 may not 可以不, 可能不 may be 可能是 need 需要 needn ’ t 不必 can be 可能是 have to 不得不 don ’ t have to may be --Mary, ______ you speak Chinese? --Yes, but not much. A. must B. need C. may D. can Ads sometimes help people learn more about new products, but at other times ads ____ tell lies. A. must D. need C. should B. can --Listen! Is Tom singing in the classroom? --No. It ____ be Tom. He has gone to Paris. A. may not D. mustn ’t B. needn ’t C. can ’t --Who is the man over there? Is it our English teacher? --No, it ____ be our English teacher. It ____ be our Chinese teacher because our Chinese teacher is much taller than our English teacher. A. mustn ’ t, must D. mustn ’ t, can C. can ’ t, can B. can ’ t, must --Is ing by train? --He should, but he ____ not. He likes driving his car. B. shall D. must C. need A. may John, you needn ’ t do your work today, you ____ do it tomorrow if you ’ re tired. A. must D. mustn ’t C. can ’ t B. may --Are you going to Beijing by plane? --It ’ s fast, but expensive. So I ’ m not sure. I ____ take a train. A. must D. will C. should B. may --Must we finish giving out the posters today? --Yes, we ____. It can ’ t be put off any longer. A. can D. do B. may C. must