1 现在完成时教案 一、引入:-Did you visit Beijing before
-Yes, I did
-No, I didn’t
Have you ever visited Beijing
Yes, I ________
No, I ________
Have you ever been to Beijing
Yes, I ________
No, I ________
二、定义:现在完成时表示到现在为止已经完成或仍在持续的动作、状态;强调对现在的影响或联系
三、 结构:have/has+p
(动词过去分词) 接触一:肯定句式 现在完成时的肯定句式是“have(has)+过去分词”
如: ① We have just finished our homework. ② She has gone home. 注意: 1)该句式中的 have 或 has 是助动词,has 用于第三人称单数,其它人称一律用 have
2)该句式中 have(has)和过去分词之间可用 just 插入
3)把该句式译成汉语时,往往用“已经”、“刚刚”、“过”或“了”等
接触二:否定句式:现在完成时的否定句式是“haven't(hasn't)+过去分词”
如: ⑥ We haven‘t studied Unit 2 yet. ⑦ The train hasn't stopped yet. 接触三:疑问句式 现在完成时的一般疑问句式是把助动词 have 或 has 提到主语之前
③ Have you read this story book yet
特殊疑问句及反意疑问句结构如下: ④ What have you done with my bike
⑤ You've read this story book, hav