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1、现在完成时练习语法1、结构：have（has）+动词的过去分词 否定句：主语+havent（hasnt）+动词的过去分词 一般疑问句：have（has）+主语+动词的过去分词2、动词的过去分词：规则变化（和过去时一样） 不规则变化（见书本不规则动词表）3、用法：1）表过去发生的某一动作对现在造成的影响或结果。Eg: I have just cleaned my clothes.我刚洗过衣服。（“洗衣服”是发生在过去的动作，对现在造成的结果是“衣服干净了”。） I have just had my breakfast.（对现在的影响：不饿）通常与already,just, ever,yet,ne
2、ver,before等时间副词连用。2）表示过去已经开始，持续到现在的动作或状态，也可能继续下去的动作或状态。*for+一段时间（延续性动词）eg: She has learned English for 3 years. (但非延续性动词的否定形式也可以) eg: They havent seen each other for 10 years.*since+过去时间点（过去时动词）注意不能和一段时间连用Eg: They have lived here since 3 years ago.(They have lived here since 2005.) Since+句子（一般过去时）Eg
3、: We have been good friends since she moved to Nantong.一、用所给词的适当形式填空。1、It _ (rain) for three days.2、I dont know this old man. I _ (meet, never ) her.3、lets go to the cinema. No, I _(see, already) the film.4、We _(finish, not ) our homework yet.5、Mum _(come, not) yet. She will be back in a minute.6、I
4、_(know) Lily for two years.7、Have you _( write) three letters this moring?8、Zhang Hong _(make) many friends since she came to London.9、_ they _(visit) the Great Wall? Not yet.10、Will the concert finish soon?No, it _ just _ (start).二、句型转换1、They have already gone to school.（改为一般疑问句及否定回答） _ they _ to s
5、chool _? No, they _.2、My father has read ten books about computers.(划线提问) _ _ _ _ your father _ about computers?3、Miss Green has taught English for a few years.(同上) _ _ _ Miss Green taught English?4、His family have owned this land since five years ago. (同上) _ _ owned this land _ five years?5、My uncl
6、e left his hometown three months ago.(用for短语替换) My uncle _ _ _ _ his hometown _ three months. 6、There are many changes in Nangtong.(改为现在完成时) _ in Nangtong.7、Tom has to finish the task within three hours.（改为一般疑问句）_ within three hours?8、He has never been to Beijing before.(改为反义疑问句) He has never been t
7、o Beijing before，_ _?三、改错1、I have just now finished my homework. ( )_A B C D2、I havent heared from you yet. ( )_A B C D3、Since I start my middle school, I have come to school by bus on my own. ( )_A B C D4、The place is used to be the home of many wild animals. ( )_ A B C D5、I had an interview to the famous star this morning. ( )_ A B C D四、翻译下列句子1、自从上周五以来，我没和我的表妹说过话。2、我们已经学了六年英语。3、父亲自从出生以来一直住在这儿。4、格林一家去年搬到了阳光镇。5、这个机场被使用了多久？5年多了。