人教版七年级下册英语全册单元复习课件【精品课件】.ppt

* * * * * * * I went to the mountain on vacation. They visited the Palace Museum. Tony stayed at home last Sunday. He did homework that afternoon. I went to school by bus. 变一般疑问句： Did you go to the mountain on vacation? Did they visit the Palace Museum? Did Tony stay at home last Sunday? Did he do homework that afternoon? Did you go to school by bus? I went to the mountain on vacation. They visited the Palace Museum. Tony stayed at home last Sunday. He did homework that afternoon. I went to school by bus. Where did you go on vacation? Where did they visit? What did Tony do last Sunday? When did he do homework? How did you go to school? Ask questions: Unit12What did you do last weekend? 1.一般过去时：过去发生的动作或存在的状态。 a.构成：由be动词/情态动词/实义动词的过去式构成。 b.规则动词过去式的构成：1一般在动词词尾加 ed; 2以“e”结尾的动词，加 “d”构成； 3辅音字母加 “y”结尾的动词,要先变 “y”为 “i”,再加 “ed”; 4重读闭音节结尾的动词,先双写最后一个字母,再加 “ed”; eg: stop, plan, travel, drop, shop c.过去式的标志: yesterday (昨天) /last + 单数名词 (上一个… 时间段 + ago (…以前)/just now = a moment ago (刚才) 规则动词过去式的构成 构成规则 例词 1、一般在动词原形末尾加– ed look looked play played start started 2、结尾是 e 的动词只加 -- d live lived hope hoped use used 3、末尾只有一个辅音字母的 重读闭音节词，先双写这 个辅音字母，再加—ed stop stopped plan planned trip tripped 4、结尾是“辅音字母+y”的词， 先变“y”为“i”再加—ed study studied carry carried 不规则动词表 Infinitive Past Tense am, is are begin bring buy can come do draw drink drive Infinitive Past Tense eat feel fly find take get give go have leave make was were began brought bought could came did drew drank drove ate felt flew found took got gave went had left made 用 法 1、表示过去某个时间发生的