英语：过去完成时态介绍.ppt

Welcome to our class! By Liu Yigui 2012.10 dx.yutian.cc /bbs / / / /m 3 http://3 http://3 4 / www.qL /dx/ /sy/ /hlj/ /wj/ /bjdxb /zy/ /zjdx/dx/ /dxb 5 / / / / / / / ? / /m/ / / / / 39. / / /zjdx/ / / / / / / / / / http://3 http://3 / Revision:一般过去式的用法 1）一般过去时表示过去某个时间发生的动作或状态，常和表示过去的时间连用，yesterday, last night, in 1990, two days ago，just now,at that time等。 2）也表示过去经常或反复发生的动作，常和often, always等表示频度的时间状语连用。 构成：主语+谓语（动词的一般过去式）+其他 ( )1． ＿＿＿＿＿＿your father at work the day＿＿＿＿＿yesterday(前天）﹖ A． Was; before B． Is; before C． Was; after D． Is; after ( )2． The twins＿＿＿＿＿＿in Dalian last year． They＿＿＿＿＿＿here now． A． are; were B． were; are C． was; are D． were; was 过去完成时态 Past perfect Tense 教学重、难点： 过去完成时的的巩固及运用。 2. 过去分词的构成。 3.与现在完成时的区别 过去完成时可以表示过去某一时刻 或某一动作之前完成的动作或呈现 的状态。也就是说发生在“过去的 过去”。 定义： 构成：had＋过去分词 6:00 7:00 现在 By the time I got up, my sister had already washed all the clothes. 1.我到家时她已经睡了。 By the time I got home, she had already gone to bed. 2.到昨天晚上时消息已传遍全球。 By yesterday evening the news had spread through the world. 3.他走以后我找到了那封信。 I found the letter after he had gone away. We reached the cinema late. The film had already been on for ten minutes. 4.我们到电影院晚了,电影已经开始十分钟了。 过去分词的构成： 1. 规则动词的变化 (regular verbs )： a) 一般情况下在动词后面加 ed work ------ worked play -------- played b) 以 e 结尾的动词直接加 d use ------ used refuse ------ refused c) 以辅音字母加 y 结尾的动词，把 y 改 i 再加 ed study ----- studied carry ----- carried d) 以重读闭音节结尾的，前面有单个元音字母时，双写辅音字母，再加 ed stop ---- stopped drop ------- dropped 过去完成时的构成：由助动词had + 动词的过去分词（V.pp) admit - admitted beg-begged drop; prefer; plan; 常用的时间状语等标志词： 1、by, before, when, by the time等构成的短语或引导的从句。 Eg. 1)By the time she came to the bus stop, the bus had already gone. 2)