现在完成时PPT

• 1. Have you ever seen him
before? • 2. We have ever been to Hainan many times. • 3. I have never seen you before.
3.常与for或since连用。For后接 一段时间；since 后接过去的点 时间或表示过去时间的时间状语 从句。
1.We have already known each other. • 2. I have just washed my face. • 3. I haven’t read your novel yet. yet.
•
2 .表示从过去到现在曾经发生过或经 .表示从过去到现在曾经发生过或经 历过某事，表达一种经验或经历， 历过某事，表达一种经验或经历，常 与副词ever, 与副词ever, never, once, twice, before等连用 before等连用
现在完成时
现在完成时表示过去的动作或存在的状对现在造成的影 响或结果，过去的这个动作或状态也有可能持续下去。 响或结果，过去的这个动作或状态也有可能持续下去。
• 1.I have just done my homework. • 2.Who has taken my pen? • 3.He has lived here since 1992. • 4.The bus has just left. left. • 5.They have seen the film
• ( C ) 1. Neither you nor Lily ___ to the
Great Wall. • A. have gone B. has went C. has been D. have been • ( C ) 2. Where ___ you _____yesterday? • A. have… been B. have …gone C. have… did…go D. were…gone did… were… • (C ) 3. Mr Black ____ here for three years since he came to China. • A. works B. worked C. has worked D. had worked

• 2. have (has) gone to表示 to表示
“某人去某地了”说明那个人 某人去某地了” 不在说话处， 不在说话处，其主语常用第三 人称。 人称。 • I didn’t see your father. Where is he? • He has gone to Australia.
现在完成时专练
• ( D ) 4. ____ for two months. • A. The meeting has begun • B. His father has bought the car • C. My brother has become a doctor
D. She has worked here • ( C ) 5. A: ____ Jim ____ to England? • B: Yes, he’ll be back next week. he’ • A. Does, go B. Has, been • C. Has, gone D. did, go
1. It is a long time since they saw each other last. 2. How long is it since you took part in the organization? 3.It has been 3 years since I lived here. 4.It will be 8 years next month since I became a teacher.
( D )10. The meeting __for five minutes. A. has begun B. had begun C. had been on D. has been on • 填空 have 1. The Greens __ been (be) here since two year ago. 2. I won’t go to see the film tonight, won’ because I ______ my ticket. (lose) have lost
三．现在完成时的用法：
1.表示一个动作刚刚结束或完成，但这个动作所 1.表示一个动作刚刚结束或完成 表示一个动作刚刚结束或完成， 造成的状态或影响依然存在， 造成的状态或影响依然存在，即表示过去的动作对 现在的影响或结果，强调现在的情况， 现在的影响或结果，强调现在的情况，常与副词 just, already, yet 连用。（注意：already多用 连用。（注意：already多用 。（注意 于肯定句或疑问句中，yet常用于疑问句或否定句 于肯定句或疑问句中，yet常用于疑问句或否定句 句尾。） 句尾。）
B: “She ____ to the library just now.” now.” A. goes B. went C. has gone D. is going
this?
• ( D ) 8. A: Who’s done best in the history Who’
exam this week? • B: Lily _____. • A. is B. does C. was D. has • ( B ) 9. I can’t open the door because I ____ can’ my keys. • A. lost B. have lost C. will lose
already.
一．现在完成时的构成
“主语+助动词have / has + 动词过去分 主语+助动词have 当主语是第三人称单数形式时， 词”。当主语是第三人称单数形式时，要 用助动词has,其他形式主语时用助动词 用助动词has,其他形式主语时用助动词 have
1.I have had lunch already. 2.She has bought some books 3.The building has been built for three years
• They began to cook two minutes • • • •
ago. (同义句) (同义句) have cooked They _____ _____ for two minutes *The bookshop closed half an hour ago. has been closed The bookshop _____ ______ _______ for half an hour. have ______ ______ 5. They ______been married (marry) for 2 years.
2.点（瞬间）动词或非延续性动 2.点 瞬间） 词：
• buy, borrow, leave, join, die,
arrive, come, go, begin, start, get, become, lose等，它们不能 lose等 和表示一段时间的时间状语连用。 和表示一段时间的时间状语连用。 如： • for +一段时间，since引导的表示 +一段时间 since引导的表示 一段时间， 一段时间的时间状语
• 3.与ever, never,just, always等表 3.与 always等表
示不确定的时间副词连用时,可用现在 示不确定的时间副词连用时,可用现在 时间副词连用时 完成时也可用一般过去时。 也可用一般过去时 完成时也可用一般过去时。 Have you ever heard of such a 现在完成时。） man? （现在完成时。） Did you ever hear of such a man? （一般过去时。） 一般过去时。） • 4.终止动词的否定式可与for或since 4.终止动词的否定式可与 或 终止动词的否定式可与for 引导的表示一段时间的副词短语 副词短语或 引导的表示一段时间的副词短语或状 语从句连用 连用。 语从句连用。 I haven't seen her for five years.
• buy--have / borrow---keep/ become— buy--have borrow---keep/ become—
be /die—bedead /marry----be married/ /die— /marry----be start(begin)---be start(begin)---be on/ end (finish)----be (finish)----be over/ join------ be in/ join-----• arrive(reach, get to,)---be in/ leave--to,)---be leave--be off （away）/ away）
用延续性动词或状态动词代替非续 性动词。 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
• 1.I have kept the book for a month. month. • 2. She has had the bike for over a
year.
(误)He has arrived here for three days. (正)He has been here for three days.
1. It hasn’t rained since two months ago. 2. He has been in Beijing for over ten years. 3. How many words have you learned since you came here?