牛津译林版英语八下Unit 3 Online tours grammar 课件（共40张PPT）

课件40张PPT。八年级下册英语教学课件系列Grammar Unit 3 Online toursSimple past tense and
present perfect tense一般
过去时构成用法常用
时间状语动词的过去式yesterday
last night
in 1990
two days ago …一般过去时现在完成时动词构成
have /has + v 过去分词助动词否定haven’t
hasn’t疑问Have you…?
Has he…? just , already, yet,
ever, never, before, several times,since,for常与下列时间状语连用There are some differences between the simple past tense and the present perfect tense.
? We use the simple past tense to tell what happened in the past.
Daniel went to Beijing two years ago.
Simple past tense and present perfect tenseWe use the present perfect tense to talk about an action that started in the past and continues to the present.
Daniel has lived in Beijing for two years.
We use the simple past tense to tell what happened in the past.
Daniel bought a new computer last month.
We use the present perfect tense to talk about the result of an action. When the action happened is not very important. It may have just happened or happened some time ago.Daniel has bought a new computer.
(Daniel has a new computer now.)Mr Wu visited Canada in 2010 and 2011.We use the simple past tense to tell what happened in the past.We use the present perfect tense to tell how many times an action has happened till now.Mr Wu has been to Canada twice.He has read that book.
(说明他现在知道那本书的内容。)
He read that book last year.
(只说明他去年读过那本书。 )
He has gone to America.
(他现在不在此地， 到美国去了。)
He went to America last year.
(只说明他去过美国。) 现在完成时：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，或从过去开始一直延续到现在的动作或保存的状态，强调的是现在的情况，不能和表示过去的时间状语连用（如：in 1990，last Sunday 等）。 一般过去时：一般过去时只表示过去的动作或状态，和现在不发生关系（即动作或状态在现在已经结束），它可以和表示过去的时间状语连用。现在完成时与一般过去时的区别：have / has + V过去分词We often use these time expressions with the present perfect tense.
already ever just recently (not) yet
So far up to now until/ till now
in/during the last/past 10 yearsTip2We often use these time expressions with the simple past tense.
yesterday the other day last… …ago Tip1A Simon is showing Millie some pictures. Complete his sentences with the correct forms of the words in brackets.Differences between the twoI ________(visit) the Palace Museum
with my grandparents the other day.visited2. I _________ (climb) Mount Huang last
Summer.climbed3. ______ you ever _______ (try) the
famous Tianjin Baozi?Havetried4. I am happy that I ____________(learn)
to swim.have learntB Mr Wu is asking the students to make sentences with the correct tenses. Help them complete the sentences with the correct forms of the words in brackets.1. I __________________ (finish/just) my
homework.
Millie _________ (finish) her homework 20
minutes ago.have just finishedfinished I _________ (live) in Sunshine Town
since I was born.
Daniel ______ (live) in Nanjing in 2007.2. I ______ (write) an email to my friend
yesterday.
Daniel __________________ (write/already)
two emails.3. I _____(be) in Hainan last month.
Some of our classmates _____________
(not be) to Hainan yet.wrotehas already writtenwashave not beenhave livedlivedMillie: ⑴__________________ (you/be/ever) to
Nanjing?
Simon: Yes. I (2)_________(be) there three times.
Millie: When (3)___________ (you/go) there
last?C Millie has never been to Nanjing. She is asking Simon about the city. Complete their conversation with the correct forms of the words in brackets.Have you ever beenhave beendid you goSimon: Last summer. I (4)_______ (spend) a
week there.
Millie: (5)___________ (you/like) it?
Simon: Oh yes. I (6)______ (have) a great time
there. I (7)________ (visit) many
places of interest and (8)____ (eat) lots
of local food.
Millie: Lucky you! I (9)_____
__________ (be/never) there.spentDid you likehadvisitedatehavenever beenSaturday, 15 March
Have you ever dreamt of travelling around the world without a passport? Yes, you can realize your dream by taking an online tour. Yesterday Daniel ⑴________ me an onlineD Millie is writing about the USA in her diary. Complete her diary entry with the correct forms of the verbs in the box.be buy read return see showshowedtour of the USA. I (2)_______never______ so many wonderful pictures before.
Last week, I ⑶________ a book about the places of interest in the USA. I (4)__________ 20 pages already. Its really interesting. My dad (5)____ just________ from the USA, but I (6) ______ never ________ there. I hope I can visit the USA some day.have seenboughthave readhas returnedhave been1. We _______ (plant) trees last month.
So far we ____________ (plant) over
300 trees there.
2. A terrible earthquake ___________
(happen) in Wenchuan on May 12,
2008.
3. He ___________ (work) here since last
year. 用所给动词的适当形式填空。plantedhave plantedhappenedhas worked4. _____ you _____ (is) to the United
States?
Not yet. But I _____ (go) to Canada a
few years ago.
5. Last year I _____ (go) to the theatre
every week.
6. In 1995, there ____ (be) a very big race.
7. Last Sunday I ____ (get) up very late.
8. He __________ (teach) in our school
for 30 years. Have beenwentwentwasgothas taughtI. 改写句子。1.My father came back from the bookshop just now.
My father ______ just ________ ______ the book shop.
2.He began to learn Chinese in 2001.
He _____ _______ Chinese since 2001.
3.The film began two minutes ago.
The film _____ ______ ______ since two minutes ago.
4.He has had the motorbike for two years.
It’s two years ______he ________ the motorbike.
He ________ the motorbike two years ______.
Two years ______ ______ since he ______ the motor
bike.hasreturnedfromhaslearnedhas been on sinceboughtboughtagohas passedboughtExerciseII. 翻译下列句子。1. 上周六你去世界之窗了吗？
_______________________________
_______ Last Saturday?
2. 在最近的5年当中，这个城市发生了
巨大变化。
________________________________
____ in the last five years.
3. 我弟弟从未出过国。
My brother ______________ abroad
before. Did you go to the Window of the
WorldGreat changes have happened in this
cityhas never been4. 我在这学校已学习两年多了。
I ____________ at this school _______
_________.
5. 你已找到你的钢笔了吗？? ______________?your?pen?yet?
6. 他去那儿已有6个月了。
He _____________ for six months.
7. 他6个月前去过那儿。
He __________ 6 months ago. for over
two yearshave studiedHave?you?foundhas been therewent there8. 她成为一名护士已经三年了。
9. 我五年前就认识李雷了。
10. 那些相片我已经寄给他了。（post）
11. 我来到这个学校后，他就一直教我。
12. 我刚丢了我的历史书。She has been a nurse for three years.I have known Lilei since five years ago. I have already posted the photos to him.He has taught me since I came to the school.I have just lost my history book.1. I ________heard of that story before.
A. don’t have B. not have C. have not D. not to have
2. She’ s never been to that factory,_________?
A. is she B. was she C. does she D. has she
3. Have you made dumplings__________? No, I haven’t.
A. just now B. yesterday C. ago D. before
4. Tom________ ill since last night.
A. was B. is C. has been D. be
5. How long have you_ ________ Nanjing?
A. gone to B. been to C .been in D. went to CDDCCⅣ 单选。6. How many times has Jim _______that park? Twice.
A. gone to B. been to C. been in D. went to
7. I’ve______ this dictionary for half a year.
A. bought B. had C. lended D. borrowed
8. She won’t go to the cinema this evening because she
________the film before.
A. has seen B. saw C. sees D. is seeingBBA1. Paul and I ______ tennis yesterday. He
did much better than I.
A. play B. will play
C. played D. are playing
2. Mr. Black is going to marry a girl he
______ in Japan last year.

A. meets B. met
C. has met D. would meet考题链接3. — Have you ever been to Canada?
— Yes, I ______ there last year with
my parents.
A. have been B. have gone
C. went D. go
4. My aunt is a writer. She ______ more
than ten books since 1980.
A. writes B. wrote
C. has written D. will write5. How time flies! Several years ______
since we started our middle school life.
We will keep the pleasant experiences
in our minds.
A. have pass B. has passed
C. will pass6. — Where were you last Saturday?
— I _______ in the Capital Museum.

A. am B. will be
C. was D. have been
7. I have been to Shanghai. I _______
there last month.
A. go B. went
C. have gone D. will go8. — What did you do last night??? — I _______ TV and read books.
? A. watch????????????????? B. watched???????????
C. have watched
9. He _______ for ten years.

A. has been married B. married
C. got married
D. has married 10. Julie's father ______ to London last
month. He ______ there three times.

A. went; had gone
B. has gone; has been
C. went; has been
D. has been; had gone11. Tony ______ football every weekend
when he was young.
A. plays B. played
C. is playing D. has played
12. — Anna, have you ______ seen
China’s Got Talent (达人秀)?
　 — Of course. I ______ it last weekend.

　 A. never; saw? 　　 B. ever; have seen?
　 C. never; have seen D. ever; saw13. — How long have you ______ here?
— For two days. I ______ here the day
before yesterday.
A. been; came B. come; came
C. came; came
14. The astronaut is so tired that he
______ for eleven hours.

A. has been asleep B. has fallen asleep
C. has gone to bed D. has gone to sleep15. — I called you yesterday evening but
you were not in.
— Sorry, I ______ in the shop with
my mother.
A. am B. will be
C. was D. have been Homework Try your best to learn more about the usage
of has /have done. Then make conversations
with the books’ name in this unit.Thank you!