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课件网) Module 2 Unit 3 Language in use Have you ever won any prizes before I haven’t travelled much. They have been to many interesting places. 现在完成时 （一） 现在完成时表示在以前某个时间已经发生的行为或曾经做过的事情对目前有某种影响或结果(这种影响或结果现在还存在)。 Betty has been to the park before. I have lost my wallet. 基本用法 过去去过公园，并且了解公园状况 过去丢了钱包，并且现在没钱花了 现在完成时还可以表示一个过去发生的动作并未在过去完成，而是一直持续到现在，并且有可能继续下去。 We have been busy this afternoon. The temperature has stayed hot this week. 基本用法 过去到现在一直在忙，并且可能继续忙 过去到现在一直热，并且可能继续热 现在完成时的句式结构 1. 肯定句式: 主语+have / has+动词过去分词+其他. I have worked here for ten years. He has seen this film three times. We have won the football game. 现在完成时的句式结构 2. 否定句式: 主语+have / has + not + 动词过去分词+其他. have not 和has not 分别缩写为haven’t和hasn’t。 I have worked here for ten years. I have not/ haven’t worked here for ten years. He has seen this film three times. He has not/ hasn’t seen this film three times. 现在完成时的句式结构 3.一般疑问句式: Have / Has+主语+动词过去分词+其他 I have worked here for ten years. Have you worked here for ten years He has seen this film three times. Has he seen this film three times 拓展 现在完成时的一般疑问句 肯定答语: Yes, 主语+have/has. 否定答语: No, 主语+haven’t/hasn’t. — Have you had two classes this morning — Yes, we have. — Has Tom lived in China for five months — No, he hasn’t. 1. I have traveled by train.(改为否定句) I _____ ____ traveled by train. 2. Tom has ever tried Chinese food.(改为一般疑问句，并作出肯定回答) — ____ Tom ever _____ Chinese food —Yes, he ____. 按要求完成下列句子 have not Has tried has (1) 一般在词尾加-ed。 work→ worked ask→ asked (2) 以e结尾的动词，词尾加-d。 live→ lived hope→ hoped (3)辅音字母+y结尾的动词，将y变为 i再加-ed。cry → cried marry → married (4)重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed。 stop → stopped plan→ planned 拓展 过去分词的构成 不规则动词过去分词 拓展 find→ found have→ had make→ made let→ let put→ put be → been do → done eat→ eaten go→ gone see→ seen We haven’t had any trouble so far. I haven’t seen her since last week. He has been away for two years. 与现在完成时连用的常用词语： 副词just, already, yet, before, ever, recently 等； since+过去时间(时间状语从句) so far（到目前为止） up to now（到现在为止） for+时间段等 注意 1. I have already _____ (see) the film. I saw it last week. 2. I have _____(make) quite a few friends here. 3. Have you _____(be) to Beijing 4. He has already_____ (post) the photo. 用正确的过去分词完成下列句子 seen made been posted 课堂小结 基本用法：表示在以前某个时间已经发生的行为或曾经做过的事情对目前有某种影响或结果(这种影响或结果现在还存在)。 现在完成时还可以表示一个过去发生的动作并未在过去完成，而是一直持续到现在，并且有可能继续下去。 句式结构： 肯定句式 ... ...
