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最新现在完成时讲解课件.ppt

发布:2017-03-26约3.49千字共20页下载文档
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判断下列句子的时态 1.She works in a factory. 2.I am doing my homework now 3.They will /are going to have a picnic this Sunday. 4.They held a sports meeting last week. 5.I have told you many times 一般现在时 现在进行时 一般将来时 一般过去时 现在完成时 小试身手 上一页 下一页 主菜单 Read and translate(读并且翻译) I have finished my homework. I have cleaned all the rooms. I have eaten up all the food.. 1.我已经完成了我的作业。 2.我已经把所有的房间都打扫了。 3.我已经把所有的食物都吃光了 现在完成时的构成 主菜单 上一页 下一页 have (has)+ 过去分词 1. 规则动词:与过去时变化相同。   (1) 一般+-ed    work---worked---worked   (2) 以“ e ”结尾, + - d 。    live---lived ---lived   (3) “辅音字母 + y” 结尾,y 变 i, + -ed。    cry---cried---cried   (4) 重读闭音节结尾(辅元辅),双写后+-ed 。    drop---dropped--dropped 2 、不规则动词,见不规则表(p145) 动词过去分词 (pp)变化规则 过去分词的构成 上一页 下一页 Type original p.t p.p cost cost cost read read read meet met met catch caught caught keep kept kept ride rode ridden speak spoke spoken drink drank drunk eat ate eaten ABB AAA ABC 主菜单 现在完成时 1.过去发生的动作对现在造成的影响或结果。 2.过去已经开始,持续到现在的动作或状态 have breakfast I have just had my breakfast. (现在我不饿) I’m not hungry now moved here in 2013 I still live here I have lived here for three years. I have lived here since 2013/three years ago. 现在完成时的主要用法 上一页 下一页 -- It’s so dark. --Someone has turned off the light. (有人刚把灯关了,对现在造成的结果是:现在很黑) -- Are you free? --I have finished my homework. I am free (我已经完成了家庭作业,对现在造成的结果是很有空) 主菜单 1.表示过去发生的某一动作对现在造成的影响或结果。 现在完成时的主要用法 2.表示过去已经开始, 持续到现在的动作或状态 He has been sick for two weeks . (他两周之前就生病了,一直到现在还没好.) 1.He has cleaned his room. Has he cleaned his room? 2. They have come back from work. They haven’t come back from work. 写出否定句和疑问句 He hasn’t cleaned his room . Have they come back from work ? Group work I can do it . 现在完成时的基本句型: 肯定式:主语 + 助动词have/has + 动词的过去分词. 否定式: 主语 + 助动词have/has + not + 动词的过去分词. 疑问式:助动词Have/Ha
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