2) Not yet. 还没呢。
2.现在完成时表示过去发生的事情对现在造成的影响 ——（有后果的前因，前因部分用现在完成时）。
e.g.I can’t ride my bike, because I have lost the key. Our team has got another point. I am sure we’ll win the game.
e.g. study-studied
4)(辅)辅元辅（最后的辅音单独发音）双写加-ed e.g. stop-stopped
5)不规则变化（参见课本145-146页不规则动词表）
现在打开课本第21页，完成第三题(不规则变化写出过去式及过去分词)。
regular verbs study-studied help-helped smile-smiled laugh-laughed play-played close-closed talk-talked listen-listened walk-walked
II、现在完成时的意义 1. 表示已经完成的某个动作。
常见时间状语： already已经(肯定句)； yet已经(疑问句) ；还(否定句)-放句尾 recently=lately最近-常放句首或句尾; just刚刚(注意：just now刚才-用于过去) ever曾经; never…before(放句尾) 以前从没有…; this week/these days/ 这周/这些日子 so far 到目前为止； during/in the last/past …years 在过去…年里
现在完成时（Present Perfect Tense）
I、构成 have/has(助动词) + done (过去分词)
1.过去分词的构成：规则变化和过去式-did的构成结构一样。
1)直接加-ed
e.g. play-played
2)以不发音的e结尾，直接加-d
e.g. live-lived
3)以辅音字母加y结尾，变y为i加-ed
2.现在完成时的句型变化 I have eaten. 一般疑问句：Have you eaten? 做肯定回答和否定回答： Yes, I have. // No, I haven’t. 变否定句：I haven’t eaten.
对比：I have a book. 一般疑问句：Do you have a book? 做肯定回答和否定回答：Yes, I do. // No, I don’t. 变否定句：I don’t have a book.
现在请打开《五三》 P16，完成以下题目 “语法全练” I. 2.3
II. 3.4 III. 3 “五年中考全练” 3
The answers to the exercises I. 2. You haven’t finished your homework yet. Can I help you? 3.-Have you seen the film? -Yes, I have II. 3.Have you ever seen the person? -No, I haven’t. 4.Tom hasn’t been to the US before.
irregular verbs tell-told-told write-wrote-written see-saw-seen know-knew-known say-said-said put-put-put teach-taught-taught run-ran-run make-made-made
练习 1)My father has ever seen the film. （变一般疑问句并作否定回答。） - Has your father ever seen the film? - No, he hasn’t. 2)The girl has some apples. (变成否定句) - The girl doesn’t have any apples.
这周我读了两本书。
I have read two books this week.
在过去三年里他写了两本书。 He has written two books during the last 3 years.
特别注意（重重点） 1) I have already eaten. （已经） 疑问句：Have you eaten yet? （已经） 否定句：I haven’t eaten yet. （还）
III. 3.Have you ever travelled/traveled along theed the History Museum twice. I’ve learned a lot there.
对比：I can’t ride my bike, because I lost the key yesterday. Our team got another point just now. I’m sure we’ll win.
记忆：只要出现过去时态的时间状语，就必须使用过去时态。
练习 1)Ken___his jacket in the gym. He has to get it back.
A. left B. leaves C. is leaving D. was leaving 2)Don’t return(还)the video to Peter, I ___it.
A. don’t watch B. won’t watch C. haven’t watched
D. wasn’t watching.
e.g. 他已经离开了。
He has already left.
你曾经帮过他吗？
Have you ever helped him?
我最近没有看到过他。
I haven’t seen him recently.
我们以前没有看过那部电影。 We have never seen the film before.