資源簡介

(共38張PPT)
Section 2 Grammar
Going on an exchange trip
2024年滬教版英語（八年級上）
Unit 5
學習目標
I can
describe things that students can do on an exchange trip.
talk about the experiences of other cultures.
express my opinions about the benefits of exchange trips.
understand and cope with culture shock.
01
新
課
導
入
03
應
用
實
踐
06
回
顧
總
結
07
隨
堂
小
練
02
學
習
理
解
04
遷
移
創(chuàng)
新
05
考
點
速
遞
學習內(nèi)容
新課導入
1
Look and say!
You can use the structure “have + pp.” to describe the following pictures like this “I have stayed with a host family for 2 weeks.”
stay with a host family
I have stayed with a host family for 2 weeks.”
visit, places of interest , such as the Forbidden City
be in Beijing for 2 weeks now.
I have been in Beijing for 2 weeks now.
I have visited many places of interest in Beijing. such as the Forbidden City
make new friends
enjoy different kinds of food.
I have made many new friends here.
I have enjoyed different kinds of food.
do lots of fun things, so far!
learn some useful Chinese phrases at a local school with my British classmates
I have done lots of fun things so far.
I have learnt some useful Chinese phrases at a local school with my British classmates
學習理解
02
A The present perfect
We use the present perfect to talk about past events with a connection to the present.
Eric has been in Beijing for a week. He has written an email to tell his mother about his exchange experience. Read the email and pay attention to the words
Dear Mum,
I have been in Beijing for a week now. I’m staying with my host family and they are friendly. I have just learnt how to play Go. My host brother Wei
taught me the rules. He has also shown me the medals he won.
I have done lots of fun things so far! I have learnt some useful Chinese
phrases at a local school with my British classmates. I haven't practised them yet but I will soon! Our teacher has told us we will do some Chinese painting and tai chi next week. I haven't tried tai chi before, so I am excited!
By the way, Wei hasn't been to the UK. I'd like to invite him to London during summer holiday. What do you think
My exchange trip in Beijing
Mum
We form the present perfect with have / has + the past participle of the main verb.
Look !
I / You / We / They have = I’ve / You've / We've / They've
He / She / It has = He's / She's / It's
have not = haven’t has not = hasn't
The past participle of a regular verb is usually the same as its past tense
form. You can find the past participles of some irregular verbs on pages
142-143.
現(xiàn)在完成時
一、用法：
1.表示動作發(fā)生在過去，并對現(xiàn)在有影響。(常與already, yet, never, ever, just等詞連用)
2.表示從過去一直持續(xù)到現(xiàn)在的動作或狀態(tài)。(常與for, since引導的時間短語或從句連用)
二、結構：
肯定句：have/has+ V-ed
注意：該句式中的have或has是助動詞，has用于第三人稱單數(shù)，其它人稱一律用have。
否定句：haven’t (hasn’t)＋過去分詞
一般疑問句：把助動詞 have或has提到主語之前
回答用 Yes, …h(huán)ave (has).
No, …h(huán)aven’t (hasn’t).
B The present perfect with already, yet, ever, never, since and for
We can use already, yet, ever, never, since and for with the present perfect.
Read the passage below and pay attention to the words in bold.
Sarah has been in Beijing for a week. She has stayed with her host family since 14 October. She has already tried a lot of local food in Beijing, but she hasn't visited many places of interest. For example, she has not seen the Great Wall yet, and she has not been to the Summer Palace either. She hopes to go there next week.
We use since with a point in time. We use for with a period of time.
We can use the adverbs already, ever and never after have / has and before
the main verb.
三、標志詞：
already 意為“已經(jīng)”，表示在此之前或某個特定時間之前，一般用于肯定句。如：
We have already met. 我們已經(jīng)見過面了。
yet 意為“還；尚未”，常用于疑問句或否定句。在疑問句中用來詢問某事是否發(fā)生，在否定句中用來表示某事尚未發(fā)生但有可能發(fā)生。
—你們見過面了嗎？ —我們還未見面。
—Have you met yet
—We haven’t met yet.
ever 意為“在任何時候；從來”，用于疑問句或否定句。
我們曾見過面嗎？
Have we ever met
never 意為“從不”，表示否定意思。
我們從未見過面。
We’ve never met.
含義 用法 例句
already 已經(jīng) 肯定句 I have already finished my homework.
just 剛剛 肯定句 She has just cleaned the kitchen.
ever 曾經(jīng) 疑問句 Have you ever visited the Great Wall
never 從未 否定句 She’s never talked to a foreigner.
yet 尚未；還未 否定句、 疑問句 He has not heard from her yet.
Has Mr. Wang arrived yet
現(xiàn)在完成時中的since和for
現(xiàn)在完成時可以用來表示發(fā)生在過去某一時刻的、持續(xù)到現(xiàn)在的動作或狀態(tài)，常與for, since引導的時間狀語連用。
1 for+時間段。表示“有（多長）一段時間了”。如：
I have studied English for five years. 我學英語已有五年了。
His mother has been ill for a week. 他媽媽已經(jīng)病了一個星期了。
2 since+時間點。表示“自從……以來”。
(1) since+過去一個時間點。如：
　 I have lived here since 2003. 我自從2003年以來就一直住這兒。
(2) since+時間段+ago。如：
She has stayed in Guangzhou since three months ago.
她自三個月前就一直待在廣州。
3 for, since引導的短語或從句可以互換。如：
I have studied English for five years.
我學英語已有五年了。
= I have studied English since five years ago.
= It is five years since I began to study English.
(3) since+從句（一般過去時）。如：
Mr Wang has worked in the factory since he came to the city.
自從到這個城市以來，王先生一直在這家工廠工作。
(4) It is+時間段+since+從句（一般過去時）。如：
It is 13 years since I began to live here. 我住這兒已有13年了。
應用實踐
03
Choose since or for when they are in the present perfect tense
_______ 1997
_______ a long time
_______I was 12
_______ two days ago
_______ a month
_______ he was born
_______ ten years
for
for
for
since
since
since
since
Doris and Chris are good friends. They(1)___________(know)
each other (2)_______a long time. They first met each other in the Tennis Club. Doris is now in London on an exchange trip. She (3)___________ (be) away (4)__________last Sunday. Chris went on holiday the week before. Therefore, Doris (5)______________(not see) Chris (6)_______two weeks.
1 Complete the passage with the correct form of the verbs in brackets and since or for.
for
have known
for
has been
since
hasn't seen
遷移創(chuàng)新
04
Have you ever been to Australia / Canada / Japan / India...
Have you visited the Great Wall /...
How long have you stayed / been in...
Have you ever eaten...
2 Think about your travelling experiences. Ask and answer questions with your classmates.
考點速遞
05
考點一：現(xiàn)在完成時態(tài)的基本概念和用法
1. 表示動作發(fā)生在過去，并對現(xiàn)在有影響。
2.表示從過去一直持續(xù)到現(xiàn)在的動作或狀態(tài)。
考點二、現(xiàn)在完成時態(tài)標志詞詞語
1.already, yet, never, ever, just的用法
2.for, since的用法
3. so far ,by now, since then, over the years, in the past 3 years
回顧總結
06
1.We have learned how to use the present perfect tense.
2.We have learned how to use the present perfect tense with
already ,ye ,ever and already.
課堂小練
07
1. —Let’s go for a walk.
—But I ________ my work yet.
A. don’t finish B. won’t finish C. didn’t finish D. haven’t finished
2. The film “Ne Zha” is so wonderful that I _____ it twice.
A. watch B. watched C. will watch D. have watched
3. —Why not take a taxi home It’s too far away from here.
—Because I ________ all my money.
A. spend B. have spent C. was spending D. am spending
4. —I see you’re doing great in your studies lately!
Thanks. Our school ___ new online tools. They make learning more fun and
interactive.
A. will introduce B. has introduced C. introduces D. introduced
5. They have _____ finished doing the housework, but they haven’t done their
homework _____.
A. already; yet B. yet; already C. yet; yet D. already; already
D
D
B
A
B
6. The number of blue whales _____ sharply in the past 10 years.
A. is dropping B. dropped C. drops D. has dropped
7. —How long have you been in Qingdao —_______ five years ago.
A. When B. While C. Since D. For
8. Susan wrote her first book ______. Her book ______ very popular all over
the world ever since it came out.
in 1860’s; was B. in 1860s; has been
C. in the 1860s; has been D. in the 1860; was
9. — The film Ne Zha 2 is really amazing. Have you ________ watched it
— Not ________. But I plan to watch it at the cinema this Saturday evening.
A. already; just B. ever; yet C. just; already D. yet; ever
10. —________ you ever ________ the new library —No, I haven’t.
A. Do; visit B. Have; visited C. Did; visit D. Are; visiting
C
A
C
D
B
二、按要求寫句子。
1 The woman has found her bag.
(1) （改為否定句）
(2) （改為一般疑問句并作肯定回答）
2 They have completed their homework.
(1) （改為否定句）
(2) （改為一般疑問句并作否定回答）
The woman hasn’t found her bag
Has the woman found her bag Yes, she has.
They haven’t completed their homework
Yes,he has.
He has cleaned the room
Have they completed their homework No, they haven’t
3 Has he cleaned the room
(1) （作肯定回答）
(2) （寫出肯定句）
4 Have they lost their way
(1) （作否定回答）
(2) （寫出否定句）
No, they haven’t
They haven’t lost their way.
Have they completed their homework
No, they haven’t
三、根據(jù)提示漢譯英：
— 杰克已經(jīng)買了新手機嗎？(yet)
.
— 沒，他還沒買新手機。(yet)
.
(2) — 你曾參觀過博物館嗎 (ever)
.
— 沒，我沒有。我從未參觀過博物館。(never)
— 你曾在圖書館借過書沒有？(ever)
.
— 有啊，我借過。我已借了三次了。(already)
Has Jack bought a new mobile phone yet
No, he hasn’t bought a new mobile phone yet.
Have you ever visited a museum
No, I haven’t. I’ve never visited a museum
Have you ever borrowed books from the library
Yes, I have. I’ve already borrowed books three times
3.她投身野生動物保護已經(jīng)10年了。
She has devoted herself to wild animals for 10 years.
4. 自從我出生以來，我的家人就住在同一套公寓里。
Since I was born, my family have lived in the same flat.
5.我在當?shù)氐囊凰鶎W校學到了一些有用的中文短語。
I have learnt some useful Chinese phrases at a local school.
6.我們的老師已經(jīng)告訴我們下周要繪制一些中國畫和打太極拳。
Our teacher has already told us we will do some Chinese painting and tai chi next week.
Thank you！

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