(共40张PPT)
译林版·八年级下册
Unit 3 Onling tours
Grammar
1. To understand the differences between the simple past tense and the present perfect tense.
2. To grasp the expressions with the present perfect tense.
3. To grasp the expressions with the simple past tense.
4. To understand different uses of the present perfect tense.
Learning targets
1.Who designed ‘Around the world in eight hours’
It is designed by Nancy Jackson.
2.What is the main character called
He is called Itchy Feet.
3.In what color are the places you have visited marked
They are marked in bright purple.
Revision
完成句子。
1. 北京因万里长城而著名。
Beijing _____________ the Great Wall.
2. 这条河是个钓鱼的好地方。
This river is a _______________ fishing.
3. 我三天前听说过这件事。
I _________ this _______________.
4.自从2000年起,他就在上海工作了。
He __________ in Shanghai ______ 2000.
is famous for
good place to go
heard of three days ago
has worked since
Revision
past
present
Presentation
We use simple past tense to tell what happened in the past.
Daniel 两年前去了北京。
Daniel went to Beijing two years ago.
past
present
We use the present perfect tense to talk about an action that started in the past and continues to the present.
Daniel 已经在北京居住两年了。
Daniel has lived in Beijing for two years.
1. 三年前他养了只猫做宠物。
He ______ a cat as pet three years ago.
2. 这只宠物猫他养了三年了。
He _________ the pet cat for three years.
kept
has kept
Exercises
past
present
We use the simple past tense to tell what happened in the past.
Daniel 上个月买了台新电脑。
Daniel bought a new computer last month.
past
present
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已经买了台新电脑。
Daniel has bought a new computer.
(Daniel has a new computer now.)
1. 我上个星期去参观了那个新动物园。
I _______ that new zoo last week.
2. 我已经参观过那个新动物园了。
I ____________ that new zoo.
visited
have visited
Exercises
past
present
We use the simple past tense to tell what happened in the past.
吴老师2010年和2011年访问过加拿大。
Mr Wu visited Canada in 2010 and 2011.
past
present
We use the present perfect tense to tell how many times an action has happened till now.
吴老师已经去过加拿大两次。
Mr Wu has been to Canada twice.
1. 我上周看过这部电影。
I _____ this movie last week.
2. 我已经看过这部电影很多次。
I __________ this movie many times.
saw
have seen
Exercises
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.
Presentation
Differences:
构成不同
(1) Tom went to London last year.
( 2 ) Lily has been to London twice.
一般过去时 :动词的过去式。
现在完成时 :“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
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)
3. 具体的时间状语
(1) 一般过去时的时间状语
yesterday, the other day, 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, (not)till, recently,up to now, until/till now 等。
Diffences between the two
A Simon is talking with Millie about some online lete their sences with the correct forms of the words in brackets.
1.My friend Neil lives the UK.He _______ ( visit ) the place Musem
online the other day.
2.I _______ (see) many local arts on the website of Hangzhou Arts
and Crafs Museum last week.
3._______ you ever ________ ( try) the online gamed on the website
of the Shanxi Museum
4.I _____________ (learn ) a lot from Digital Dunhuang by now.
visited
saw
Have tried
have learnt
B 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.
2. I ______ (write) an email to my friend yesterday.
Daniel _________________ (write/ already) two emails.
has already written
have just finished
wrote
finished
3. I ______(be) in Hainan last week.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.
was
haven not been
have lived
lived
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.
Millie: ___________________ (you/be/ever) to Nanjing
Simon: Yes. I(2)____________(be) there three times.
Millie: When (3)____________ (you/go) there last
Simon: Last summer. I (4)______(spend) a week there.
Millie: (5)____________ (you/like) it
Have you ever been
have been
did you go
spent
Do you like
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.
had
visited
ate
have never been
Make a new dialogue
A: Have you ever been to …
B: Yes, I have …..
A: When and where did …
B: ….
A: How long did you stay there …
B: ….
A: How many times …
B: ….
A: … is a good place for shopping. What did you buy there
B: I ….
A: What do you think of …
B: I think they are ….
D 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 show
Saturday, 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 Danniel (1)_________ me an online tour of the USA. I (2)_____ never _____ so many wonderful pictrues before.
showed
have seen
Last week, I (3)_________ a book about the places of interest in the USA. I (4)_________ 20 pages already. It’s really interesting. My dad (5)_____ just _________ from the USA, but I (6) ______ never_______ there. I hope I can visit the USA some day.
be buy read return see show
have been
bought
have read
has
returned
some day 和 the other day 的区别:
some day指将来“总有一天、有朝一日、终将、(日后)某一天”,谓语动词用一般将来时。如:
Your wishes will come true some day.
总有一天你的愿望会实现的。
Some day you’ll have to pay for what you have done.
总有一天你要为你的行为而付出代价的。
some day 和 the other day 的区别:
the other day 相当于a few days ago, 意为“几天前、某天、那天、不久前”,句中用一般过去时。如:
I met her in the street the other day.
几天前我在街上碰见过她。
I bought the watch the other day.
这手表我是几天前买的。
1) 一般过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。
Summary
2) 一般过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。
一般过去时的时间状语:yesterday, last week, … ago, in 1980, in October, just now等,皆为具体的时间状语。
现在完成时的时间状语:
for, since, so far(到目前为止), ever, never, just, yet, till/until, up to now(到现在为止), in past years, always等,皆不确定的时间状语。
共同的时间状语:
this morning, tonight, this April, now, already, recently, lately 等。
3) 现在完成时可表示持续到现在的动作或状态,动词一般是延续性的.
如:live, teach, learn, work, study, know。
一般过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。
句子中如有过去时的时间副词(如yesterday, last week, in 1960)时,不能使用现在完成时,要用过去时。
(错)Tom has written a letter to his parents last night.
(对)Tom wrote a letter to his parents last night.
Practice
选择填空
(1). A: I’ve seen the film The Sound of Music already.
B: When_____ you ____ it
A: The day before yesterday.
A. have; seen B. will; see C. did; see D. did; seen
(2) Mr Black_____ in China since five years ago.
A. lived B. has lived C. lives D. is going to live
(3).We_____trees last Sunday. So far we_____over 300 trees there.
A. planted; planted B. planted; have planted
C. have planted; planted D. have planted; have planted
C
B
B
1. A terrible earthquake ___________(happen) in Wenchuan on May 12, 2008.
2. He ___________ (work) here since last year.
用所给动词的适当形式填空。
happened
has worked
3. ----_____ you _____ (is) to the United States
----Not yet. But I _____ (go) to Canada a few years ago.
4. Last year I _____ (go) to the theatre every week.
5. In 1995, there ____ (be) a very big race.
6. Last Sunday I ____ (get) up very late.
7. He __________ (teach) in our school for 30 years.
Have been
went
went
was
got
has taught
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 World
Great changes have happened in this city
has never been
4. 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
have studied
for over two years
Have you found
Homework
Review the usage of the simple past tense and the present perfect tense.
2. Finish writing Millie’s trip to the USA.
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