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(共36张PPT)
Unit 3 The world at one click
Grammar
译林 （2024版）八年级
下
Learning objectives
1
Lead in
Presentation
3
Practice
Production
5
Summary
Assessment
7
Homework
2
4
6
8
By the end of the lesson, I will be able to...
1
2
3
learn the usages of the simple past and present perfect tenses and distinguish them;
learn to use the two tenses to complete the blanks;
use the two tenses to describe an online activity.
00
Learning objectives
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Daniel received a message from his new online friend Mark in the UK.
Lead in
01
Look and say.
What did Mark do two years ago
Where does Mark live now
Mark _________ to Liverpool two years ago.
A. moved B. moves
Mark __________in Liverpool now.
A. lived B. lives
moved
lives
Lead in
01
Look and say.
What did Mark’s dad do last month
How many times has Mark’s dad been to China
He ________ to China last month.
A. went B. goes
He __________ to China three times.
A. went B. has been
went
has been
Lead in
01
Read and think.
Mark moved to Liverpool two years ago.
He went to China last month.
Mark lives in Liverpool now.
He has been to China three times.
Simple past tense
present perfect tense
What are the differences
Read the message and pay attention to the simple past and present perfect tenses.
Presentation
02
Read and learn.
Hi, Daniel. My family moved to Liverpool two years ago. It feels like we came here just yesterday. We’ve lived in a small flat since we arrived, but Dad says we’re going to move to a new house soon. Dad has just gone to work. He’s an engineer. He travels a lot. He went to China last month. He brought back many fantastic things! He’s been to China three times so far. He says it’s really worth a visit! Maybe I can visit your country this summer holiday.
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the simple past tense for __________ in the past and the time of the action is________.
We moved into a small flat when we arrived.
past
present
an action
over
我们用一般过去时，描述过去发生、且动作已结束的行为。
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the present perfect tense to talk about an action that _________________and __________ to the present.
We’ve lived in a small flat since we arrived.
past
present
started in the past
continues
我们用现在完成时，描述过去开始、且持续到现在的动作。
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the simple past tense to describe ________________ in the past. The state is_______.
My family moved to Liverpool two years ago.
past
present
what happened
over
我们用一般过去时，用来描述 “过去发生的事”，且这个动作的状态已经结束（和现在无关）
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the present perfect tense to talk about______________________.
My family has moved to Liverpool.
(My family lives in Liverpool now.)
past
present
the result of an action
我们用现在完成时，描述 “过去动作带来的现在结果”。
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the simple past tense to describe ______________ in the past.
My dad went to China last month.
past
present
what happened
用来描述 “过去发生的某个具体动作”（仅陈述过去的事件，和 “现在的累计情况” 无关）。
Presentation
02
Look and learn.
There are some differences between the simple past tense and the present perfect tense.
We use the present perfect tense to describe ________________an action has happened__________.
My dad has been to China three times.
past
present
how many times
till now
我们用现在完成时，用来描述 “到现在为止，某个动作发生的总次数” 。
We use ______________ tense to tell what happened in the past.
We use ___________________ tense to talk about:
an action that started in the past and continues to the present;
the result of an action;
how many times an action has happened till now.
the simple past
Presentation
02
Work out the rules.
We’ve lived in a small flat since we arrived.
My family has moved to Liverpool.
(My family lives in Liverpool now.)
My dad has been to China three times.
We moved into a small flat when we arrived.
My family moved to Liverpool two years ago.
My dad went to China last month.
the present perfect
Presentation
02
Work out the rules.
My family has moved to Liverpool.
(My family lives in Liverpool now.)
My dad has been to China three times.
We’ve lived in a small flat since we arrived.
Tip
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
We moved into a small flat when we arrived.
My family moved to Liverpool two years ago.
My dad went to China last month.
Tip
We often use these time expressions with the simple past tense:
yesterday ; the other day ; last ... ; ... ago”
the simple past
the present perfect
Presentation
02
1.定义
谓语动词用 “动词的过去式”：
规则动词：直接加 “ed”（如：moved、visited、introduced）；
不规则动词：需记忆对应过去式（如：went、brought、saw）。
2. 标志词
表示 “明确的过去时间”：yesterday；the other day；last...（如 last month、last weekend）；...ago（如 two years ago）
Work out the rules.
the simple past
the present perfect
1. 结构
谓语动词用 “have/has + 动词的过去分词”：
主语是第一 / 二人称、复数：用 “have + 过去分词” ；
主语是第三人称单数：用 “has + 过去分词” ；
过去分词：规则动词加 “ed” 不规则动词需记忆。
2. 标志词
表示 “与现在相关的时间 / 结果”：
already；ever；just；recently；(not) yet；so far；up to now；until/till now；since + 过去时间 / 句子（如 since we arrived）；次数短语（如 many times、three times）
Presentation
02
Work out the rules.
the present perfect
Simon is talking with Millie about some online visits.
Practice
03
Complete their conversation with the correct forms of the words in brackets.
A
Read and complete.
Millie: Hi, Simon. Some museums offer online tours. (1) ______ you ever ______ (try) one of them
Simon: Yes. I visited the Shaanxi History Museum last weekend. And I also visited the Digital Dunhuang website. I (2) __________ (see) ten caves on it so far.
Millie: Nice! I (3) ______ (visit) the website of the Hangzhou Arts and Crafts Museum yesterday. Besides local arts, there are some online games for teenagers. I (4) ____________ (play) one six times so far. It’s interesting!
Simon: Online museums are really great! My friend Neil lives in the UK. He hasn’t been to China in person, but he (5) __________ (visit) the Palace Museum online many times. So far, he (6) __________ (learn) a lot about the museum.
Have
tried
have seen
visited
have played
has visited
has learned
Some students are talking about online tours.
1 Simon: Last month, I ____________ (introduce) some online museums to my friend Neil in the UK. He ____________ (visit) three of the museums so far.
2 Amy: I _______________ (collect) two pages of information from the website of the Water Cube so far. My sister Shirley ________ (sign) up for a swimming training course on its website yesterday.
Help them complete their sentences with the correct forms of the words in brackets.
B
Practice
03
Complete the article.
introduced
has visited
have collected
signed
3 Kitty: I ______ (visit) Shanghai Ballet online last Saturday. They _________ (put) a list of different shows on the website recently.
4 Millie: I ____________ (visit) Digital Dunhuang three times. My brother Andy ____________ (not visit) it yet.
5 Daniel: I ______ (write) a report about online tours yesterday. I __________________ (already send) the report to Mr Wu.
Help them complete their sentences with the correct forms of the words in brackets.
B
Practice
03
Complete the article.
visited
have put
have visited
hasn’t visited
wrote
have already sent
Mark’s father is planning a family trip.
Practice
03
Complete the text with the correct forms of the verbs in the box below.
be, book, decide, explore, go, make, tell
Dad (1) ____________ different tourist attractions online to plan our family trip to China. Yesterday he (2) _________ that we should visit Chengdu first. Dad (3) ______ already _________ our tickets online. He used websites to find suggestions on places to visit and (4) ______ a list. Dad (5) ______ to Chengdu on a business trip in 2023, but he didn’t have time to see the giant pandas. He fit this into the trip this time. Thanks to the internet, Dad (6) ____________ able to plan our trip easily. He also (7) ____________ me that in China, people do not need to take their wallet—they prefer to pay online instead of in cash. That’s very convenient.
C
Complete the box.
has explored
decided
has
booked
made
went
has been
has told
For example:
I went to Lijiang with my sister last spring.
I have taken more than 80 beautiful photos of the old town so far.
We climbed the Jade Dragon Snow Mountain on the third day.
I have already tasted local snacks like Lijiang Baba with my family.
…
Production
04
Sentence Structure
I went to ...We ...on the ...I ...during the trip.
I have ...so far. I have already ...with ...
I have ...since that trip.
Words Bank
目的地：Beijing; Xiamen…
动作：visit scenic spots; take photos; try local food; buy souvenirs
时间标志词：last summer; so far; already…
Read and write.
Write at least five sentences about one of your trips, using the simple past tense and the present perfect tense.
Show time
一、用所给动词的适当形式填空（考察时态、固定搭配）
Liverpool _______ (be) close to the west coast of England and _______ (be) famous for the Beatles.
People __________ (count) down to midnight at Times Square every New Year's Eve—it __________ (be) a tradition since 1907.
The music scene in Liverpool __________ (remain) second to none, and you __________ (can) enjoy live music there every day.
A trip to New York __________ (not be) complete without a walk through Central Park, which __________ (have) lakes and green grass.
London __________ (have) something for everyone, and many tourists __________ (watch) the Changing of the Guard every year.
Summary
05
The grammar we have learned
is
is
count
has been
remains
can
isn't
has
has
watch
二、单项选择
I really like taking a boat on the Xuanwu Lake, so I ______ it again last weekend.
A. visit　　 B. visited　　C. will visit　　 D. have visited
2.-Shirley, shall we watch the film Born to Fly this weekend
-I'm afraid not. I ____ it twice and the story of Chinese pilots really touched me.
A. watch　　 B. watched　C. was watching　　 D. have watched
3.-My cousin Linda has gone out.-Oh, has she What time ______ she ______
A. has; gone　　B. will; go　　C. did; go　　 D. is; going
Summary
05
The grammar we have learned
B
D
C
二、单项选择
4.-Great changes have taken place in our hometown over the past years.
-Yeah. Things ______ different when we were young.
A. have been　　 B. are　　C. will be　　D. were
5.--______ did your uncle leave for the capital of Denmark
--Let me see. He ______ for nearly 2 months.
When; has left　　 B. How long; has been away　　
C. How long; has left　　D. When; has been away
Summary
05
The grammar we have learned
D
D
三、根据所给中文意思，用英语完成下列各句
1. 我想把这次旅行的照片分享给我的朋友们。
I want to________ the photos of this trip ________my friends.
2.现在很多人通过互联网购物、学习和工作。
Now many people do shopping, study and work________ ________ ________.
3.多亏了老师的耐心帮助，我终于弄懂了这道难题。
________ ________ the teacher's patient help, I finally understood this difficult problem.
Summary
05
The grammar we have learned
share
with
through the Internet
Thanks to
Assessment
06
Self-assessment
I can learn the usages of the simple past and present perfect tenses and distinguish them.
I can learn to use the two tenses to complete the blanks.
I can use the two tenses to describe an online activity.
基础：订正练习 B 的所有句子，补充含 “last...（一般过去时）” 和 “so far（现在完成时）” 的句子。
Homework
07
提升：用一般过去时和现在完成时各写 3 句话，描述自己的一次线上活动，需包含至少 2 个标志词（如 “yesterday、already”）。
拓展：调查 2 位同学的线上文化体验，用一般过去时和现在完成时写一篇 5-8 句的小报告。
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