现在完成时的时间状语.doc

现在完成时的时间状语 现在完成时和带有since或for等表示时间的状语连用（since 后跟表示过去的一个时间点；for 后跟一段时间）,表示动作或状态从某一时刻开始，一直持续到现在，并有可能继续延续下去。例：He has been in the League for three years. 他入团已三年了。He has lived here since 1978.从1978年以来，他一直住在这儿。 现在完成时往往同表示不确定的过去时间状语，如：already, yet, just, before, recently, lately等连用（注:already 常用于肯定句，yet 常用于否定句和疑问句中，且常位于句末）。例： Have you heard from your family lately/recently?你最近收到家人的来信了吗？The train has just arrived. 火车刚到。Ive never been to Japan before. 我以前没去过日本。They havent finished their homework yet.他们还没有完成作业。We have already worked out that problem.我们已解出了那个问题。 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, once, rarely ,three times, on several occasions等: Have you ever been to the Great Wall?你曾经去过长城吗？ I have been to Beijing twice. 我去过北京两次。We have often been there. 我们经常去那儿。He has done time on several occasions. 他已坐过好几次牢了。 现在完成时还常与包括现在时间在内的时间状语连用,如now, up to now,during / in the past / last few days / weeks / months / years,today, so far等: I have heard nothing from him up to now.到目前为止我没有他的任何消息。I have learned how to swim now. 我现在终于学会了怎样游泳。Have you seen Han Meimei this morning? 你今天上午看到韩梅梅了吗？【高考链接】从A、B、C、D四个选项中选出能填入空白处的最佳答案。1. The construction of the two new railway lines by now. (2006年陕西卷)A. has completed B. have completedC. have been completedD. has been completed2. I wont tell the student the answer to the math problem until he on it for more than an hour. (2006年湖北卷)A. has been working B. will have worked C. will have been working D. had worked3. My friend, who on the International Olympic Committee all his life, is retiring next month. (2006年浙江卷)A. servedB. is servingC. had servedD. has served4. We our new neighbors yet, so we dont know their names. (2006年上海卷)A. dont meet B. wont meet C. havent met D. hadnt met5. leave at the end of this month. I dont think you should do that until another job. (2006年北京卷)A. Im going to; youd foundB. Im going to; youve foundC. Ill; youll findD. Ill; youd find6. Customers are asked to make sure that they the right change before