高考英语——过去完成时课件(共53张PPT)

复习 用现在完成时填空 1.I _______ (be) to Beijing many times. 2.Great changes ___________ (take ) place in Shanghai in the last ten years. 3.The students______ already __________ (finish) their homework 4. The students ___________ (learn) many words since they _____ (come) to our school. 5.Tom _________ (stay) in Europe for two weeks. have been have taken finished have learned has stayed have came 现在完成时的构成 主语+ have / has +过去分词+… 过去分词的构成： 1. 规则动词的变化： a) 一般情况下在动词后面加 ed work ------ worked play -------- played b) 以辅音字母加 y 结尾的动词，把 y 改 i 再加 ed study ----- studied carry ----- carried c) 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 2. 不规则动词的变化见课本 本课出现的主要动词的过去式和过去分词 get got gotten go went gone leave left left start started started be was/were been take took taken run ran run sleep