八年级下册Unit3 Online tours grammar课件（共33张PPT）

课件33张PPT。Unit3 Grammar1一般过去时表示在过去某个时间发生的动作或存在的状态，也表示过去经常或反复发生的动作。
e.g. He came here yesterday.
2. 现在完成时表示过去的动作（或者状态）对现在产生的影响和结果。
e.g. He has broken the glass.一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作。说话的侧重点只在于陈述一件过去的事情，不强调对“现在”产生的影响。
现在完成时表示的动作或状态与现在的情况有联系，侧重这一动作对现在所造成的影响。Differences:
构成不同
（1） Tom went to London last year.
(2) Lily has been to London twice.
一般过去时 谓语动词用动词的过去式。
现在完成时 谓语动词用 “助动词 have/has +过去分词”2. 用法不同
（1） I had supper an hour ago. 我一小时前吃的晚饭。（表示过去的动作）
（2）I have just had supper.我刚刚吃过晚饭。（强调对现在的影响——— 我不饿）
（3）He was a teacher then. 他那时是个教师。（表示过去的状态）
（4）He has been a teacher since then.他从那时起一直当教师。（他现在还是教师）2. 用法不同
e.g. 1. We haven’t seem him since last year. 我们自从去年以来一直未见到他。 （现在还未见到）
2. We didn’t see him last year. 我们去年没见到他。（现在不一定未见到）
3. Who has open the door?
谁把门开了？ （现在门还开着）
4. Who opened the door?
谁开的门？ （指过去，和现在无关。） （ 现在不知道门开的还是关的）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.
(只说明他去过美国。)3. 具体的时间状语
（1） 一般过去时的时间状语
Yesterday, once, last week, ….ago, in 1980, in October, just now 等。
（2）现在完成时的时间状语
for, since, so far, ever, never, just , yet, till, up to now,等。三、时间状语不同 Did you watch that film last week?
你上周看那部电影了吗？
She came back yesterday.
她是昨天回来的。
His father has been a teacher since 1968.
他父亲从1968年以来一直当老师。
— Have you ever been to London?
— No, I have never been there.
— 你曾经去过伦敦吗？
— 没有，以前从没去过。一般过去时通常与表示过去的具体的时间状语连用。如：yesterday, last week, two years ago, just now, in 2002等；而现在完成时则常与表示不确切的时间副词连用，如already, yet,
ever, never, just, since, for等。I ________ (visit) the Palace Museum with my grandparents the other day.I ________ (climb) Mount Huang last summer.visitedclimbedComplete the sentences with the correct forms of the words in brackets.(P41A)I am happy that I ___________ (learn) to swim. ______ you ever ______ (try) the famous Tianjin Baozi?Have triedhave learntI ________________ (finish/just) my homework.
Millie _______ (finish) her homework 20 minutes ago.
2. I ______ (write) an email to my friend yesterday.
Daniel __________________ (write/already) two emails.have just finishedfinishedwrotehas already writtenComplete the sentences with the correct forms of the words in brackets.(P41B)3. I ____ (be) in Hainan last month.
Some of our classmates ____________ (not be) to Hainan yet.
4. I _________ (live) in Sunshine Town since I was born.
Daniel ____ (live) in Nanjing in 2007.washave not been have livedlivedFill in the blanks:
Last Sunday, Ted and his father ______________ (be) at home. They ____________ (move) to a new house. His father _____________(want) to put the books in some boxes, but he _____________ (can not) find any boxes. Ted ____________ (tell) him the boxes _______________ (be) in the next room. Then he ____________ (bring) these boxes to his father. weremovedwantedtoldcouldn’twerebrought1, Is Tom doing his homework?
No, he ______________ (finish) his homework.
2. Do you know Miss King?
No, but I ______________ (hear of) her before.
3. What about the film?
Sorry, I don’t know. I _______________ (not see) it yet.
4. _____________ you ever ____________ (be) to the Great Wall?
No, never.
5. Help yourself, please.
No, thanks. I am full. I ____________ just __________ (eat) three eggs.has finishedhave heard ofhaven’t seen Have been have eaten Finish Part C and D on Page42A talk about NanjingM: (you/be/ever) to Nanjing?
S: Yes, I (be) there three times.
M: When (you/go) there last?
S: Last summer. I (spend) a week there.
M: (you/like) it?
S: Oh yes. I (have) a great time there.
I (visit) many places of interest and
(eat) lots of local food.
M: Lucky you! I (be/never) there.Have you ever beenhave beendid you gospentDo you likehadvisitedatehave never beenFill in the blankets with the right verb forms:
--- you ever this book?
---Yes. I it two weeks ago. (read)
2. Last week we (visit) the museum.
3. He (work) here since 2010.
4. Kimi (have) a new computer now, he
(buy) it last year.
5. She (go) to America three times.
6. Tom (live) in that small town in 2000, and he just (move) to the new city. Havereadreadvisitedhas workedhasboughthas beenlivedhasmoved1. — Where is Mr. Zhao? (2014铜仁)
?? ?— He ____ to?Mount?Fanjing. He’ll come back ____ a week.
A. has been; in???????B. has gone; after????????
C. has gone; in???????D. has been; after
2. — I suppose you are at least 60 years old.
— Thank you. I’m glad you ___ that. My real age is 362. (2014黄冈)
A. say????? ???B. said?????????
C. are saying??? ??D. were sayingI. 中考小练。3. Beijing and Zhangjiakou ____ applying to host the 2022 Winter Olympic Games in 2013. (2014连云港)
A. begin??????????????? B. began???????????
C. have begun???????? D. had begun
4. Monica, you ______ the exam! Congratulation! (2014河北)
A. pass???????? ??B. have passed??????
C. will pass????????????????D. are passing5. — Have you ever ____ an amusement park?
— Yes, I have. I ___ Fun Times Amusement Park last year. (2014达州)
A. been to, have gone to???????????????
B. gone to, have been to
C. go to, went to?????????????????????
D. been to, went to6. — Lily, why are you still here???School is over for half an hour. (2014南京)
????— Because I ___ my task yet.??I still need one more hour.
A. won’t finish?? B. didn’t finish????
C. haven’t finished??? D. hadn’t finished
7. He _____ in this factory for 20 years already. (2014北京)
???A. will work???????????? B. works?????????
C. has worked????? ?D. is working8. — What did you do last night??? — I _______ TV and read books.
(2013湖南娄底) ? A. watch????????????????? B. watched???????????
C. have watched
9. He _______ for ten years.
(2013四川雅安)
A. has been married B. married
C. got married
D. has married 10. Julie's father ______ to London last
month. He ______ there three times.
(2013江苏连云港)
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. (2013浙江宁波)
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.
(2013湖北咸宁)
　 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. (2013四川广安)
A. been; came B. come; came
C. came; came
14. The astronaut is so tired that he
______ for eleven hours.
(2013山东青岛)
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. (2013重庆)
A. am B. will be
C. was D. have been 1. We _______ (plant) trees last Sunday.
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.II. 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 taughtIII. 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 thereHomeworkPractice making sentences with the two difference tenses.