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Unit 1 Past and Present Grammar教學(xué)課件 牛津英語八年級下冊

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Unit 1 Past and Present Grammar教學(xué)課件 牛津英語八年級下冊

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(共39張PPT)
Unit 1 Past and present
Grammar
Free talk
What do you know about Mr Chen and Sunshine Town
Mr Chen has lived in Sunshine Town since he was born.
Mr Chen has moved to a new neighbourhood.
He and his wife have lived in this area since 1965.
The town has changed a lot over the years.
The government has turned part of the town centre into
a new park.

We call them the present perfect tense
A story about Eddie!
past present
Eddie was born four years ago.
我們用一般過去時談?wù)撛谶^去某一時間里所發(fā)生的動作或存在的狀態(tài).
four years ago
1.We use the present perfect tense to talk about things that started in the past and continues to the present.我們用現(xiàn)在完成時表示從過去持續(xù)到現(xiàn)在的動作或狀態(tài)。
present
past
past
present
4 years
Eddie has lived with Millie since he was born.
Eddie has lived with Millie for four years.
2.We use the present perfect tense to talk about an actionthat happened in the past and has a connection with the present. 我們用現(xiàn)在完成時表示已完成但對現(xiàn)在有一定影響的動作。
present
past
Today, Hobo said to Millie."Eddie has eaten my food."
(Eddie ate the food and now Hobo has nothing
to eat.)
3.We also use the present perfect tense to talk about how many times an action has happened till now.我們用現(xiàn)在完成時談?wù)摰浆F(xiàn)在為止一個動作已經(jīng)發(fā)生了多少次。
past
present
Eddie 吃了很多次Hobo 的食物。
Eddie has eaten Hobo's food many times.
She's been married three times.
There have been many buildings in my
town.
I can’t get in the house. I’ve lost my keys.
She has lived in Liverpool all her life.
How clean! Who has cleaned the room
We have seen the film twice.
Match the reasons for using the present perfect tense
on the right with the sentences.
started in the past and continues to the present
happened in the past and has a connection with the present.
talk about how many times an action has happened till now
The structure of present oerfect tense
(1)肯定句:
I/We/You/They + have + p.p(過去分詞)+其它.
He/She/It + has + p.p(過去分詞)+其它.
Practice:
1. 他們已經(jīng)完成家庭作業(yè)了。
They ______________ (finish) their homework.
2. 他已經(jīng)完成家庭作業(yè)了。
He ______________ (finish) his homework.
have finished
has finished
(2)否定句:
e.g.
Mr Chen ____________ to any other city yet. ( not move)
The snow _____________ yet. ( not melt融化)
hasn’t moved
I/We/You/They+have not / haven’t +p.p(過去分詞)+其它。
He/She/It +has not / hasn’t +p.p(過去分詞)+其它。
hasn’t melted
(2)否定句:
I/We/You/They + have not/haven’t + p.p +其它.
He/She/It + has not/hasn’t + p.p +其它.
Practice:
1. They _______________________ (not finish)
their homework yet(還未).
2. He ________________________ (not finish) his
homework yet.
have not/haven’t finished
has not/hasn’t finished
(3)一般疑問句及回答:
Have/Has +主語+ p.p. +其他
Have I/you/we/they arrived
Has he/she/it Yes, I/you/we/they have.
he/she/it has.
No, I/you/we/they haven’t.
he/she/it hasn’t.
read the book
read the book
A: Has she …
B: Yes, she has. / No, she hasn’t.
Let’s practise
brush your teeth
brushed your teeth
A: Have you …
B: Yes, I have. / No, I haven’t.
Let’s practise
(4)特殊疑問句:
特殊疑問詞+ have/has +主語+ p.p +其它?
e.g. The girl has learned English for 6 years.
How long has the girl learned English
I have eaten two apples for breakfast.
What have you eaten for breakfast
Have a try
She has cleaned the kitchen. (改為否定句)
She ________ cleaned the kitchen.
2. They have visited some interesting places in China. (改為一般疑問句)
______ they _______ ____ interesting places in China
3. The poor dog has died. (改一般疑問句并作否定回答)
---_________ the poor dog _________
---No, it __________.
4. They have borrowed ten books from the library. (對劃線部分提問)
_____ _______ books ______ they _________ from the library
hasn’t
Have visited any
Has died
hasn’t
How many have borrowed
Regular verbs Irregular verbs Base form Past participle Base form Past participle
visit hit
repair put
live meet
move make
try sell
study give
fit write
動詞的過去分詞
plan think
visited
repaired
lived
moved
tried
studied
fitted
planned
hit
put
met
made
sold
given
written
thought
Competition
規(guī)則動詞的過去分詞的構(gòu)成
大多數(shù)的動詞的過去分詞是規(guī)則的,只需在動詞后加-ed;
work→worked listen→listened jump→jumped visit→visited
2.在以-e結(jié)尾的動詞后只加-d;
close→closed like→liked agree→agreed move→moved
3.在以輔音字母加y結(jié)尾的動詞,應(yīng)將y改
為i再加ed;
study→studied carry→carried
try→tried worry→worried
4.以重讀閉音節(jié)結(jié)尾的動詞,要雙寫末尾
的輔音字母再加-ed;
stop→stopped drop→dropped
不規(guī)則動詞的過去分詞的構(gòu)成
有些動詞的原形和過去分詞相同;
put→put hurt→hurt become→become run→run
2.改變單詞中間元音字母;
sit→sat win→won hold→held
3.把單詞結(jié)尾的字母d改為t;
lend→lent spend→spent send→sent
4.以eep結(jié)尾的動詞,把eep改為ept;
keep→kept sleep→slept
5. 過去分詞以aught或ought結(jié)尾;
teach→taught catch →caught buy→bought
6.以ay結(jié)尾的動詞, 把a(bǔ)y變成aid;
7.在原形詞尾加n或en;
還有些動詞的過去分詞是不規(guī)則的,需要特殊記憶。(課本第122-123頁)
say→said pay→paid
give→given eat→eaten
不規(guī)則動詞過去分詞的構(gòu)成參見P122
原形 過去式 過去分詞
cost cost cost
read read read
meet met met
catch caught caught
be was/were been
fall fell fallen
draw drew drawn
fly flew flown
see saw seen
ABB
AAA
ABC
1. borrow
2. hope
3. make
4. get
5. plan
6. cry
7. send
8. watch
9. say
10. grow
11. hit
12. enjoy
borrowed
hoped
made
got
planned
cried
sent
watched
said
grown
hit
enjoyed
A
Mr Wu wants the students to practice using the present perfect tense. Help them write the past participles of the verbs below.
A short test
現(xiàn)在完成時的時間狀語
◆常與與現(xiàn)在完成時連用的時間狀語,如:already, never, ever, just, yet, recently, so far, over the years,up to now等
◆還與表示一段時間的狀語連用,如since…, for many years等.
◆還常和表示次數(shù)的時間狀語連用,如once, twice, many times
上一頁
下一頁
主菜單
現(xiàn)在完成時常用的標(biāo)志詞
1. already 與 yet
already
“已經(jīng)”
( 用于肯定句中,常放于行為動詞之前,其他動詞之后)
yet
用于否定句中
“還”
用于疑問句中
“已經(jīng),還,仍然”
yet 是already 的否定詞
(放于句末)
1 )I _____already ____ the film.(我已看過這部電影了)
have
seen
否:I ________ ______ the film ______.
haven’t
seen
yet
疑:________ you ______ the film ______
Have
seen
yet
No , not _____ .
“還”
“已經(jīng)”
yet
2) I ____________ (not have) lunch yet.
haven’t had
2. ever 與 never
ever 曾經(jīng)
主要用于疑問句
(放句中)
never 從不
主要用于否定句
(放句中)
-- ____ you ever _____(eat) Beijing Duck --No, ______.
Have
eaten
never
2) He _____ never _____ (read) the story.
has
read
3. just 與 recently
just 剛才
用于肯定句中
(放句中)
recently
用于各種句式中
(放句末)
不久前,最近
1) I ______ just _______ (see) him.
have
seen
2) She ________ _______ (not see ) them recently.
hasn’t
seen
3) ______ you ______ (use) it recently
Have
used
4) She _______ ______ (be) busy recently.
has
been
3) She’s never seen the film, ____ ____
has she
4. since 和 for + 一段時間 常用現(xiàn)在完成時
since +
短語
=
for + 一段時間
句子
(用一般過去時)
for + 一段時間
1) 常用現(xiàn)在完成時
2) 動詞必須可以延續(xù)
3) 用How long 提問
1) I ______ (begin) to work here in 2000
began
= I _____________ here since 2000.
have worked
2) They __________ (not meet ) each other for years.
haven’t met
Since 短語和for +一段時間都用how long 提問
4) I have lived here since I was born.(劃線提問)
_____ _____ _____ you ______ here
How
long
have
lived
3) She _______(feel) lonely since she ______(move) here.
has felt
moved
選用 for和 since填空:
1.We haven’t seen each other ______ a long time.
2.His father has been in the Party ______ 10 years ago.
3.The film has been on ______ 20 minutes.
4.Mr Green has worked here ______ he came to China.
5.His grandparents have been dead ______ several years.
6. It’s five years _______ we met last time.
for
since
for
since
for
since
下一頁
5. 次數(shù)(twice/ three times/ ….) 和before(以前)單獨(dú)放句末常用現(xiàn)在完成時
1) He_________ (see) the film twice.
has seen
_____ _____ _____ ____ he seen the film
How
many
times
has
2) ______ you ______ (be) to Beijing before
Have
been
6. over the (past/last) years 在(過去的)這幾年間
e.g. Great changes __________ (take) place over the
past ten years.
have taken
7. so far , up to now, until/till now
到目前為止
e. g. We ____________ (learn) many English songs so far.
have learned
句式 位置

already 陳述句 have/has后,句末

ever 疑問句 主語后
just 陳述句 have/has后
never 否定陳述句 have/has后
yet 否定陳述句 疑問句 句末
recently 肯/否定陳述句,疑問句 句末
A short test
B
Mr Wu asks the students to complete the sentences below using the present perfect tense. Help them complete the sentences.
1. They _____________ (finish) their homework already.
2. John _____ never ________ (visit) China.
3. Mr. Li _____________ (repair) over ten bicycles since
Monday.
4. We _____________ (not see) each other for years.
5. My parents ______________ (not come) back yet.
6. Our teacher ___________ (teach) us a lot about the
history of China.
have finished
has visited
has repaired
haven’t seen
haven’t come
has taught
Part C (p14)
Millie: (1) ______ you ______ (see) any films recently, Sandy
Sandy: No, I haven’t. What about you
Millie: I (2) ________ (see) one last Saturday.
Sandy: What’s it about
Millie: It’s about the changes in Beijing over the past century.
From the film, I (3) _____________ (learn) more about
Beijing’s past and present.
Sandy: Oh, I think I (4) __________ (hear) about the film. Do
you plan to see it again .
Millie: Yes, I’d like to.
Have seen
saw
have learnt
have heard
Exercises
1. I ___________ (study) in America for over three years.
2. The young man __________ (live) alone since he graduated from college.
3. This is the best film that I __________ (see) so far.
4. —Hello. Can I speak to Miss Brown
—Sorry, she __________ (fly) to Canada already. She'll be back in a week.
5. In the past two weeks, the artist __________ (draw) many pictures about his hometown.
6. I ___________ (know) Jimmy for over two days and now we are good friends.
have studied
has lived
have seen
has flown
has drawn
have known
7. —Why are the windows so dirty
—Because we _____________ (not clean) them for a very long time.
8. He _____________ (not finish) the homework yet.
9. My family __________ (live) in Nanjing since 1996.
10. They ________ already _________ (decide) to go to Kunming for the holiday.
11. The girl ________________ (learn) English for about two years.
12. _____ Tom ________ (write) letters to you recently
haven’t cleaned
hasn’t finished
have lived
have decided
has learned/learnt
Has written
動 詞 填 空:
1._____ you ________(clean) the room
Yes, we __________(do) that already.
When _______ you ______(do) it
We _______(do) it an hour ago.
2.______ he ______(see) this film yet Yes.
When _____ he _____(see) it
He ______ it last week.
3. How many times _____you______(be) there
Have
cleaned
have done
did
do
did
Has
seen
did
see
saw
have
been
下一頁
上一頁
4. I __________ (read) the novel twice. It’s interesting.
5. She _________(go) to Pairs, hasn’t she Yes.
How ______ she _______(go) there
She _______(go) there by air.
6. So far, many countries _______________(develop)
their software programs.
7.Mr Chen ______(give)up smoking last year.
8.Mr chen __________(give) up smoking since last year.
9. He _______ (teach) us English for two weeks last year.
10. He _______ (teach) us English for two years.
have read
has gone
did
go
went
have developed
gave
has given
下一頁
上一頁
taught
has taught
1. She has already cleaned the kitchen. (改為否定句)
→She __________ cleaned the kitchen ___________.
2. They have visited some interesting places in China. (改為一般疑問句)
→___________ they _____________ ___________ interesting places in China
3. The poor dog has died.(改為一般疑問句并作否定回答)
→_________the poor dog _________ -No, it __________.
4. They have borrowed ten books from the library. (對劃線部分提問)
→_________ _________books __________ they _________ from the library
5. Have you ever been to the Great Wall (改為否定句)
I ________ ________ been to the Great Wall.
6. They have studied here since they moved to the city. (對劃線部分提問)
___________ ___________ _________ they _________ here
hasn’t yet
Have visited any
Has died hasn’t
How many have borrowed
have never
How long have studied
1.Julia isn’t going to the cinema with us because she _________ the film.
A. sees B. saw C. will see D. has seen
2.--Your shoes are so old. Why don’t you buy a new pair
--Because I ______ all my money on an MP5.
spend B. have spentC. will spend D. was spending
3.— When can I see the doctor, madam
— Let me see. Sorry, you ____________ your turn, so you’ll have to wait again.
are missing B. have missed
C. will miss D. missed

4.—Mike, why are you watching TV again
— I my homework.
A. finish B. finished
C. have finished D. had finished
5. —Do you know the Englishman
—Yes. I _____________ him for two years.
A. get to know B. have known
C. knew D. got to know
6. —Where is Tom We can’t find him anywhere.
— Perhaps he _____ home.
A. has come B. is going
C. went D. was going
7. --- Why won’t you go to the movie with me, Gina
---- Because I it twice.
A. see B. have seen C. saw D. will see
8. —China develops so fast.
—That’s true. It ______ a lot already.
A. changes B. changed
C. will change D. has changed
9. —Are Li Yan and Wang Mei still living in Nanjing
—No, they ____ to Shanghai.
A. had moved B. moved
C. will move D. have moved
10.— _____ you _____ the movie Gongfu Panda II
— Not yet. I'll see it this Sunday.
a. Did, see b. Do, see C. Have, seen D. Will see
11.— How do you like your English teacher
— He is great. We friends since three years ago.
A. were B. have made
C. have been D. have become
12. Though he ____ the book three times, he hopes to read it again.
A. read B. reads C. has read D. will read
Homework
Review the present perfect tense.
Remember the past participles
of the irregular verbs on P13.

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