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1、.please look at these phrases,see a filmvisit your grandpa study English tell a story,I have seen a film.I have visited my grandpa.I have studied English.I have told a story.,原形 过去式 过去分词see-saw-seen,She has seen a film.She has visited my grandpa.She has studied English.She has told a story.,I have s
2、een a film.I have visited my grandpa.I have studied English.I have told a story.,我已经看过电影。（看过电影了，对电影比较熟悉，不想再看了）,我已经看望过我的爷爷。（见过爷爷，了解爷爷的状况）,我已经学习了英语。（懂得了一些英语）,我已经讲了一个故事。（现在已经了解了故事的内容）,1.在以前某个时间已经发生的行为 或 曾经做过的事情 对现在有某种影响2.过去已经开始，一直延续到现在的动作或状态,-现在完成时,肯定句结构为：主语+have/has+动词的过去分词,We have finished our homewo
3、rk.He has worked out the answer.,动词的过去分词有规则变化和不规则变化两种,规则变化和一般过去时的动词变化规则一样,一般情况下直接加-ed watchwatchedwatched2.以不发音字母e 结尾的，直接加-d：movemovedmoved3.以“辅音字母+y”结尾的，变y 为i，再加-ed carrycarriedcarried4.以一个辅音字母结尾的重读闭音节的动词要双写最后一个辅音字母再加-ed：stop stopped-stopped,不规则动词表见课本p126-129,一、AB-C型,do-did-donego-went-gonesee-saw-seeneat-ate-eatendrink-drank-drunk,二、A-B-B型,feel-felt-feltbuy-bought-boughtfind-found-foundbuild-built-builthear-heard-heard,三、A-A-B型,beat-beat-beaten,四、A-B-A型,run-ran-runcome-came-comebecome-became-become,五、A-A-A型,put-put-putlet-let-letcut-cut-cut,
