练习册

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    主语 + 系动词 + 表语 常见的系动词有:be, seem, appear, become, go, get, grow, turn, look, sound, feel, taste, smell e.g. She is very happy. I am a student. He became nervous when thinking of stealing. It is impossible to find a shop that is open after 5 p.m. in this area. We are proud of our friends. To become a top gymnast, it is important to start when very young. It’s much cheaper to camp than to stay in a hotel. It is useless trying to argue with him. I got caught in the traffic. Just then, the traffic light turned red. He seemed to have misunderstood you. 【查看更多】

     

    题目列表(包括答案和解析)

    as if和as though引导的从句所叙述的情况与事实相反时，从句的谓语动词多用虚拟语气。在虚拟语气结构中，用________时态来表示现在的情形；用________时来表示过去的动作或状态；用________时表示正在进行的动作；用________时表示将要发生的动作。

    当as if和as though从句的主语和主句主语一致，且从句中含有系动词be的某种形式时该主语和系动词可以省略。

    例如：John paused as if(he was)expecting Mary to speak．

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