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(共19张PPT)
语法-----现在完成时
Go for it 新目标
新知讲解
现在完成时的定义：表示过去发生或已经完成的某一动作对现在造成的影响或结果。
基本结构have/has done
Have/has为助动词，帮助动词实现完成时。
变否定句为haven’t/ hasn’t；变疑问句时将have/has提前。
例题1. They have finished their task.
否：They haven’t finished their task.
疑问句：Have they finished their task?
新知讲解
标志词 1.already, yet, just 例：
Have you handed in your homework yet?
I have already handed in my homework.
I haven’t handed in my homework yet.
Did you see my book that I’ve just put here?
?
【归纳】already意思为已经，放句中，用于肯定句
yet意思为已经，放句末，用于否定和疑问句
Just意思为刚刚，表示刚刚才完成的动作
巩固练习
( )1.——Have you finished your homework？ ——Not .
(A)ever (B)already (C)yet (D)just
( )2. We haven't finished our homework . (A)already (B)ever (C)yet (D)never
( )3.——Have you finished your homework ? ——Yes,I've done that __________.
(A)yet,already (B)already, yet (C)ever,never (D)still,just
( )4.John's father borrowed some pictures
(A)have already (B)has just (C)have ever (D)has yet
5.I have already told him the bad news.(变为否定句) I _________ told him the bad news__________.
?
C
C
A
B
haven’t
yet
新知讲解
标志词：
2.never(从未有过）与ever（曾经有过）常与以下三个短语一起考察：
Have been to去过.....表示已经回来
Have gone to去了...表示还未回来，可用于回答where is sb?的问句

Have been in...待在...
?
A
B
B
A
A
B stay
to遇到here, there, home等副词时消失
现在完成时三种特殊结构的区分
新知讲解
形式 意义 注意
have/has been to 曾经去过某地（已经回来） 与表示次数的词once/twice等或just/never连用，不能与since/for引导的时间状语连用

have/has gone to

已经去了某地（未回） 强调主语已经离开说话地点，不能与since/for引导的时间状语连用

have/has been in

已经在某地呆了一段时间 强调人已经在某地，能与since/for引导的时间状语连用
巩固练习
( )1.——Have you travelled on the train？ ——Yes, I have.
A.never B.ever C.just D.yet
( )2.——Have you learned English? ——Yes, I've learned a lot.
A.never,ever B.ever,never C.ever,already .D.already.ever
( )3.——Where is your father? ——He ________ America for business.
A. have been to B.has been to C. has gone to D.has been in
I have been to Macau before.(改为否定句) I __________ __________ been to Macau before.
B
C
C
have
never
新知讲解
3.by now=so far 到目前为止
例： By now, thousands of people have died because of NCP.
?
?
标志词：
4.for+时间段
Since+（过去）时间点、句子（一般过去时）、时间段+ago
5.Before 以前 放在句尾
例：Ｉhave never read this kind of books before.
I have been in Chongqing for 10 years.
I have been in Chongqing since 10 years ago.
I have been in Chongqing since I came here.
I have been in Chongqing since 2010.
So far, we have learned English for six years.
新知讲解
【归纳】
过去的具体年，月，日，季节等都是时间点。
Since意思为自从......，和for可以同义句转换
在有for和since的现在完成时句子里，必须用延续性动词。
只有have been in能与for和since连用
for和since用how long提问
How long只能提问延续性动词
巩固练习
1. I saw this film last week.
Now, I know this film because I______________________.
2. Bob finished his homework just now.
Now, Bob can hand it in because he____________________.
3. I took a trip to Singapore twice.
Now, I know something about this country because I _________________________.
4. The Greens went to the visit the Palace Museum yesterday.
Now, you can't find them here because they ___________________________.
have seen it before
has just finished it
have ever been there twice
have gone to Beijing
for or since
Mr. Brown has had his TV ________ 15 years.
I’ve taken driving lessons _________ last month.
My sister has learnt to swim ______ a month .
My friends haven’t visited me _________ two years ago.
We haven’t used our car ________ a long time .
6. She hasn’t had a good cup of coffee _________ years.
7. Tom has worn glasses _________ he was 7 years old.
for
since
for
since
for
for
since
巩固练习
新知讲解
动词的过去分词形式
1.规则动词


2.不规则动词
finish--finished--finished
live--lived--lived
carry--carried--carried
stop—stopped--stopped

Eg.
go—went—gone
see---saw—seen
forget—forgot--forgotten
词尾直接加ed
不发音的e结尾加d
辅音字母+y结尾把y变i 加 ed
重读闭音节结尾只有一个辅音
字母双写这个辅音字母+ed
拓展提高
【拓展】短暂性动词变延续性动词
①arrive at/in sw. get to/reach sw. come/go/move to sw.
→ be in sw./at school/at home/on the farm/be here/be there
②come/go back, return → be back come/go out → be out
③become → be
④close → be closed open → be open
拓展提高
⑤get up → be up die → be dead leave sw. → be away from sw.
fall asleep/get to sleep → be asleep finish/end → be over marry → be married
⑥start/begin to do sth. → do sth. begin → be on
⑦borrow → keep lose → not have buy → have put on → wear
catch/get a cold → have a cold get to know → know
⑧have/has gone to → have been in
⑨join the league/the Party/the army
→ be a league/a Party member/a soldier → be a member of the league/the Party
→ be in the league/the Party/the army
巩固练习
1、Both his parents look sad . Maybe they _________what's happened to him .
　　Ａ. knew Ｂ. have known Ｃ. must know Ｄ.will know
2、He has _______ been to Shanghai , has he ?
　　Ａ. already Ｂ.never Ｃ.ever Ｄ. still
3、Have you met Mr Li ______？
　　Ａ. just Ｂ. ago Ｃ.before Ｄ. a moment ago
4、The famous writer _____ one new book in the past two year .
　　Ａ. is writing Ｂ.was writing Ｃ.wrote Ｄ.has written
5、—Our country ______ a lot so far .
　　　—Yes . I hope it will be even ______ .
　　Ａ. has changed ; well Ｂ. changed ; good
　　Ｃ. has changed ; better Ｄ. changed ; better
B
B
C
D
C
6、Zhao Lan ______already ______in this school for two years .
　　Ａ. was ; studying Ｂ. will ; study
　　Ｃ. has ; studied Ｄ. are ; studying
7、We ______ Xiao Li since she was a little girl .
　　Ａ. know Ｂ. had known Ｃ. have known Ｄ. knew
8、Harry Potter is a very nice film .I_______ it twice .
　　Ａ. will see Ｂ. have seen Ｃ. saw Ｄ.see
9、—These farmers have been to the United States .
　　 —Really ? When _____ there ?
　　Ａ. will they go Ｂ. did they go
　　Ｃ. do they go Ｄ. have they gone
10、—______ you ___ your homework yet ?
　　 —Yes . I _____ it a moment ago .
　　Ａ. Did ; do ; finished Ｂ. Have ; done ; finished
　　Ｃ. Have ; done ; have finished Ｄ. will ; do ; finish
巩固练习
C
C
B
B
B
11、 His father ______ the Party since 1978 .
　　Ａ. joined Ｂ. has joined Ｃ. was in Ｄ. has been in
12、—Do you know him well ?
　　— Sure .We _________ friends since ten years ago .
　　Ａ. were Ｂ. have been Ｃ. have become Ｄ. have made
13、—How long have you ____ here ?
　　—About two months .
　　Ａ. been Ｂ. gone Ｃ. come Ｄ. arrived
14、Hurry up! The play __________ for ten minutes .
　　Ａ. has begun Ｂ. had begun
　　Ｃ. has been on Ｄ. began
巩固练习
D
B
A
C
谢谢
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