人教版八年级英语下册Unit8 Have you read Treasure Island yet? SectionA 现在完成时课件34张

课件34张PPT。Unit 9 Yoyo NO.41 Middle School
现在完成时
has/have done 定义现在完成 时态结构 标志词例题 头脑风暴present(now)futurepast用法一、从过去开始的某一动作持续到现在，还有可能继续持续下去。（常以for、since+时间为标志）现在完成时的定义:have/has+ done动词过去分词

规则动词的原形、过去式、过去分词
4、stop ______ ________ plan ______ ________
3、study ______ ________ carry ______ ________
2、live ______ ______ arrive ______ ________
1、talk ______ ______ finish______ ________
talked talked finished finished (1) 直接+“ ed ” lived lived arrived arrived(2)直接+“ d ”studied studied carried carried (3)变“y”为i+ “ ed ”stopped stopped planned planned(4)双写+“ ed ”不规则动词的原形、过去式及过去分词
1 do -________-_______
2 catch-________--________
3 tell-________--_________
4 stand-______--______
5 get-_______--________
6 hurt-________--_________
7 put-_______--_________
8 come-_______--________
9 run-________--_________
10 begin-________--_________
11 swim-_________--________
12 draw-_________--_________
13 know-________--__________
14 do-_______--________
15 go-_______--_________16 give-_______--_______
17 see-_______--________
18 drive-_______--________
19 take-______--_______
20 be-________--________
21 eat-_____--______
22 write-_______--______
23 speak-______--________
24 steal-_______--________
25 tear撕开-_______--________did done caught caught told told stood stood got got hurt hurt put put came come ran run began begun swam swum drew drawn knew known did done went gone gave given saw seen drove driven took taken was,were been ate eaten wrote written spoke spoken stole stolen tore tornPlease remember them.不规则动词的过去式以及过去分词
teach—taught—taught ABB巧记规律
become—became—become ABA
put– put –put let—let –let AAA
eat— ate—eaten ABC
AAAcost-cost-cost read-read-read
put-put-put cut-cut-cut
let-let-let set-set-set设置
hit-hit-hit 击打 hurt-hurt-hurt 规律：结尾字母一般是t或d。
特殊：read-read-read [ri:d]-[red]-[red]。 run-ran-run
come-came-come
become-became-become
overcome-overcame-overcome克服
ABA规律：中间元音字母的变化ABB(含规则动词)
sit-sat-sat win-won-won
shine-shone-shone hold-held-held
find-found-found hang-hung-hung
oversleep-overslept-overslept睡过头规律：改变单词中间元音字母ABC
take-took-taken give-gave-given
fall-fell-fallen eat-ate-eatenwrite-wrote-written speak-spoke-spoken
freeze-froze-frozen结冰 ride-rode-ridden
get-got-gotten forget-forgot-forgotten规律：有的在原形词尾加n或en，
变成以en结尾的单词。 特殊：
am/is-was-been are-were-been,
do (does)-did-done go-went-gone
see-saw-seen show-showed-shown (showed)
lie-lay躺 (lied撒谎)-lain (lied) Who has the best memory?比比谁的记性好 ABB
build-built-built
bring-brought-brought
find-found-found
have-had-had
lose-lost-lost
teach-taught-taught
meet-met-met
ABC
am/is-was-been
are-were-been
eat-ate-eaten
do-did-done
go-went-gone
see-saw-seen
know-knew-known
AAA
read-read-read [ri:d]-[red]-[red]
ABB
build- ______-____
bring- ______ - ______
find - ______-______
have- ______-______
lose - ______-______
teach- ______-______
meet- ______-______
Who has the best memory?比比谁的记性好 ABC
am/is- ______-______
are- ______-______
eat- ______-______
do (does)- ______-______
go- ______-______
see- ______-______
know- ______-______
AAA
read- ______-______ [ri:d]-[red]-[red]
Who has the best memory?比比谁的记性好 ABB
build-built-built
bring-brought-brought
find-found-found
have-had-had
lose-lost-lost
teach-taught-taught
meet-met-met
ABC
am/is-was-been
are-were-been
eat-ate-eaten
do (does)-did-done
go-went-gone
see-saw-seen
know-knew-known
AAA
read-read-read [ri:d]-[red]-[red]
ABB
lose - ______-______
teach- ______-______
find - ______-______
bring- ______ - ______
meet- ______-______
have- ______-______
build- ______-____
Who has the best memory?比比谁的记性好 ABC
know- ______-______
see- ______-______
go- ______-______
do - ______-______
eat- ______-______
are- ______-______
am/is- ______-______ AAA
read- ______-______ [ri:d]-[red]-[red]
写出下列动词的过去式及过去分词
1 read_______-______
2 bring_______-______
3 find _______-______
4 have_______-______
5 lose ______-_______
6 teach_______-______
7 meet________-_____
8 am/is______-______
9 are_____-______
10 eat_____-______
11 do______-_____
12 go______-______
13 see_____-______
14 know_____-_____
read read brought broughtfound foundhad hadlost lost taught taughtmet metwas beenwere beenate eatendid donewent gonesaw seenknew knownfor “经历(段时间)” since “自从…?以来”
for＋段时间 since＋点时间
since＋段时间＋ago=for+时间段 since＋从句，过去时1.We?have?stayed?here?for?2?hours. ?since?2?hours?ago. ?since?10?o’clock.2.We have?learned?English?since?he?came?here. I have taught for 13 years.= I have taught since 2003.用for和since填空。______three hours
______three o’clock
______two days
______yesterday
______I came here
______last Sunday_______a week
_______a long time
_______1997
______two weeks
____three years ago
_______ last monthforsinceforsincesincesinceforforsinceforsincesince小试牛刀 for＋段时间 since＋点时间
since＋段时间＋ago=for+时间段
since＋从句，过去时小试身手翻译下列句子：1、我已经学了5年的英语。

2、我已经在新疆住了14年。
3、我已经认识我的好朋友2年了.（用since造句）I have lived in Xinjiang for 14 years.I have known my best friend since 2 years ago.present(now)futurepastMum, I have already(已经) cleaned them.John, clean your teeth please. 2、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。（常以already, yet为标志。）.
现在完成时用法二：Have you watched this
movie?Yes, I have already watched it.
(已经看过了)No, I haven’t watched it yet. （还没看过）Have you read Little Women《小妇人》?Yes, I have already read it.No, I haven’t read it yet. clean your room (cleaned)finish your homework (finished)Have you …?
Yes, …. / No, …..Pairkworkteach him English (taught)lose your key (lost)Has he/she …?
Yes, …has. / No, …hasn’tplayed footballeat (eaten) potato chipssee (seen) a tiger现在完成时构成用法常用状语have + done动词过去分词
has +done1.从过去一直到现在，
还有可能持续下去.
2. 强调完成，
对现在有影响.ever, already, yet ,
for，sincesummary1.?I have learned English for 5 years.
我已经学了5年英语。
2.??We have known each other since 2 years ago.
我们彼此相识2年了。
3.? Winter has already come,
will it still be far in spring?
冬天已经来了，春天还远吗？Learn it by heart背诵好句学会了吗考考你吧小二，上习题
1.?I ____________(wait) for him for two hours . I am very angry .
2.??He _________ (be) a doctor since he was twenty .
3.??The film __________ (be) on for fifteen minutes .
4.??____ you ever ____ (read) that book before ?
5.??____ you ever ____ (try) to change her ?
6.? No one ____________ (arrive) here yet .
7.??______ the bus _____ (leave) yet ?
8.??I _____________ (not talk) to him yet .
Haven’t talkedHas lefthas arrivedHave triedHave readhas beenhas beenhave waited用所给动词的适当形式填空9.?I____?already?______?(see)?the?film.?I?______?(see)?it?
last?week.?
11.?My?father?____?just?_____?(come)?back?from?work.?He?
is?tired?now.?
12.??The?students?____________?(read)?English?when?the?teacher?came?in.?
13.?I?______________?(work)?here?since?I?______?(move)?here?in?1999.
14.?So?far?I?_______________(make)?quite?a?few?friends?here.
15.?How?long?_______?the?Wangs?_______(stay)?here???For?
two?weeks.?
16.?I?________?just?___________?(finish)?my?homework.?
17.?He?________?(go)?to?school?on?foot?every?day.?
18.______?you?______?(find)?your?science?book?yet??were readingmovedhave workedhave madegoeshave stayedhave finishedHave foundsawhave seenhas comeHe has gone to Shanghai.
他(已经)去上海了。He has been to Shanghai.
他(曾经) 去过上海。比较 have/has been to
have/has gone toHe went to Shanghai last week. 他(曾经)到/去过上海 [在他人生中曾经有过这样的经历,但他人现在肯定不是在上海而是回来了]他已经去上海了 [也许刚动身出发,也许已经到了,也许还在路上,反正他人不在这里]上周他[做了一件事:那就是]去了上海He has been to Shanghai.He has gone to Shanghai.He has been in Shanghai for 10 years.他呆在上海迄今为止已经10年了 [现在还在上海没有离开呢]辨析这些句子
由时态导致的
含义上的差别My parents the Great Wall twice.
- you ever Xiamen?
3.How long Peter the park?
4.My sister the shop. She will be back in two hours.
5.She Shanghai. She isn’t here.
6.She Shanghai for two years.has gone to have been to Have been to hasbeen in has gone to has been in 练一练：用have been to,have been in,
have gone to填空。四、正确运用have/has been to, have/has gone to,和have/has been in 三种结构。　１. have/has been to表示“过去曾去过某地”，但现在已经回来了。　２. have/has gone to表示“已去了某地”，现在还没有回来。　３. have/has been in 表示“已在某地（呆了多久）”，如果是小地方用at代替in。2019/7/3134