中考英语语法一轮复习——现在完成时讲解课件（共23张PPT）

1.肯定句: 主语+have/has(助动词）+过去分词+(其他）。 2. 否定句: 语+have/has+not +过去分词+(其他）。 I have seen him since his wedding day.（改为一般疑问句) →Have you seen him since his wedding day? He has written to me since I have been ill.(改为一般疑问句) → Has he written to you since you have been ill? 3.一般疑问句 Have/has+ 主语+过去分词? Yes, 主语+have/has. No, S+have/hasn’t. I haven’t had lunch. I haven’t had bread and egg. I haven’t read the book. Lily hasn’t drawn her picture yet. 助动词have/has可和前面的主语缩略为’ve,’s.如 they’ve, we’ve, he’s, it’s;you’ve has not=hasn’t have not=haven’t 二、过去分词的变化 1、一般动词，在词尾加 +ed work, plant,call 2.以字母e结尾的动词，词尾加+d live, change, like,love,agree,save hate, move,arrive, skate,hope, use 3.以重读闭音节结尾，末尾只有一个辅音字母的 双写辅音字母＋ed. 如：plan, stop,drop,fit(适合), prefer(更喜欢), travel ４。以辅音字母＋y，结尾，变y为i＋ed try, study, carry, hurry, cry, worry,copy come/arrive → buy → borrow → die → leave → begin/start→ join → be keep be dead be away from be on be in/be a member have 三、特征词 already(肯定句) yet(否定句和疑问句) never，ever(疑问句)just (谓语动词之前)