现在完成时复习课件.ppt

现在完成时复习课件.ppt现在完成时现在完成时功能短暂性动词延续性动词结构标志词动词 have gone to/have been to/have been in 现在完成时 vs 一般过去时过去分词 He is full . He has had a big breakfast. 。功能: I I have learned have learned English for ten years English for ten years 。基本结构基本结构 have / has + done 助动词(可以帮助构成肯定、疑问和否定句) 过去分词 has cleaned his room. (写一个一般疑问句) Has he cleaned his room? 2. She has lived in London for four years. (划线部分提问) How long has she lived in London? 3. He has been to China, ____ ____? (写出反义疑问句部分) hasn ’ t he 4. They e back from work. ( 写否定句) They haven ’t come back from work. 过去分词(Past participle) 的构成 :规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。 -ed 。如: e结尾的直接加 d。如: y结尾的,变 y为i加ed。如: ,双写这个辅音字母再加-ed 。如: :详见课本附录 P136-137 play- played study- dance- danced studied stop- stopped What are the key words for the Present Perfect Tense? A: ______ your brother ______ his homework yet? (finish) B: Yes, he ‘ s already done it. Key Key words words Has finished yet already 注意: already 用于肯定句, yet 用于疑问句和否定句中