情态动词的基本含义与完成式.例如: 1)The competition time was too limited, but fortunately our team finish the task right before the deadline. A. could B. would C. were able to D. might 答案是C.本题考查情态动词的基本含义与区别.两者同时存在时.can 表示可能性,be able to则更强调有能力完成某事.此类考查的重点还有:might在表示推测时语气最弱, shall用于第三人称的问句中常表示客气地询问第二人称意见.以及shall表示承诺.命令.威胁等语气,would表示过去常常做某事等. 2)--- You know how Mary reacted to the news? She burst out crying! --- Well, you her the news so directly, as it is beyond her expectations. A. shouldn’t tell B. shouldn’t have told C. needn’t tell D. needn’t have told 答案是B.本题考查的是情态动词+完成式表示对过去动作或事情的推测或评价.本题中reacted和burst都用的是过去时.证明动作是在过去发生的.现在来评价该不该做过去那个动作.就要用情态动词+完成式. 【查看更多】
