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(共25张PPT)
年 级：八年级 学 科：英语（译林版）
Unit 3 The world at one click
(Grammar)
Presentation
1. What are the parts of speech of the words in bold
2. What are the forms of these verbs And which tense are they used in
They are verbs.
Some are verbs in the simple past while some words are past participles.
Simple Past Tense
Present Perfect Tense
Presentation: Differences between simple past tense and present perfect tense
Difference 1:
Can you make two sentences according to the first difference
He went to the factory last September.
He has worked in the factory since last September.
Presentation: Differences between simple past tense and present perfect tense
Difference 2:
Can you make two sentences according to the second difference
He studied in the school 5 years ago.
He has already finished his study at his school.
Presentation: Differences between simple past tense and present perfect tense
Difference 3:
Can you make two sentences according to the third difference
He watched the film last week.
He has watched the film twice.
simple past
present perfect
Presentation: Differences between simple past tense and present perfect tense
Practice: Finish Part A on page 41
Practice: Finish Part A on page 41
Have
tried
have seen
visited
have played
has visited
has learnt
Practice: Finish Part B on page 42
B Some students are talking about online plete their sentences with thecorrect forms of the words in brackets.
1 Simon:Last month,I________(introduce)some online museums to myfriend Neil in the UK.He_______(visit)three of the museums so far.
2 Amy: I_____(collect)two pages of information from the website ofthe Water Cube so far.My sister Shirley_________(sign)up for a swimming trainingcourse on its website yesterday.
3 Kitty: I_______(visit)Shanghai Ballet online last Saturday.They______ _____(put)a list of different shows on the websiterecently.
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_________(send)the report to Mr Wu already.
Practice: Finish Part B on page 42
B Some students are talking about online plete their sentences with thecorrect forms of the words in brackets.
1 Simon:Last month,I__ ______(introduce)some online museums to myfriend Neil in the UK.He_______ (visit)three of the museums so far.
2 Amy: I_____ (collect)two pages of information from the website ofthe Water Cube so far.
My sister Shirley_________ (sign)up for a swimming trainingcourse on its website yesterday.
3 Kitty: I_______ (visit)Shanghai Ballet online last Saturday.They___________(put)a list of different shows on the websiterecently.
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_________(send)the report to Mr Wu already.
introduced
has visited
have collected
signed
visited
have put
have visited
hasn’t visited
wrote
have sent
decided
has
booked
made
has been
told
Further thinking: What’s the reason for not using the simple past tense
the result of an action
Practice: Finish Part C on page 42
Production: Talk about an online trip or a real trip
Tips: Pay attention to choosing the right tense
Your online/real trip
number of people
what to see
what to do
food
culture
music
...
课堂练习
答案：C
解析：watered。时间状语“yesterday”明确指向一般过去时，描述过去特定时间发生的动作（浇水）。选项B（现在完成时）强调对现在的影响，与句意不符。
1. — Peter, did you play table tennis with friends after school yesterday
— No, I didn't. We ______ vegetables in our school garden.
A. water
B. have watered
C. watered
D. are watering
课堂练习
答案：A
解析：have seen。“so far（迄今为止）”是现在完成时标志词，强调动作从过去持续至今并可能继续（已看三次）。选项B（一般过去时）仅表示过去动作，无延续性。
2. The film Ne Zha 2 is worth seeing. I ______ it three times so far.
A. have seen
B. saw
C. will see
D. see
课堂练习
答案：B
解析：watched
“last weekend”指明动作发生在过去特定时间（上周末），需用一般过去时。选项C（现在完成时）需搭配无具体时间或延续性状语（如already, since）。
3. After signing up for the online course, Amy ______ all the training videos last weekend.
A. watches
B. watched
C. has watched
D. will watch
课堂练习
答案：C
解析：问句明确时间点 yesterday（昨天），答句描述过去具体动作，需用一般过去时。watered 是 water 的过去式。考点：时间状语 yesterday 决定时态选择。
4. —Peter, did you play table tennis with your friends after school yesterday
—No, I didn’t. We ______ vegetables in our school garden.
A. water
B. have watered
C. watered
D. are going to water
课堂练习
答案：A
解析：第一空：电影“值得看”是客观事实，用一般现在时（is）。
第二空：so far（迄今为止）是现在完成时标志词，强调动作持续至现在，用 have seen。考点：so far 与现在完成时的搭配。
5. The film Ne Zha 2 ______ worth seeing. I ______ it three times so far.
A. is; have seen
B. is; saw
C. was; have seen
D. was; saw
课堂练习
答案：D
解析：since it started（自从开始）表示动作从过去持续至今，需用现在完成时（has been）。主语 it 为单数，故用 has 而非 have。
考点：since + 时间点 引导现在完成时。
6. —Do you know anything about the Belt and Road Initiative
—Yes, it ______ over 10 years since it started.
A. was
B. had been
C. have been
D. has been
课堂练习
答案：A
解析：in person（亲自）符合语境（家长亲自到校接学生）。in common（共同），in public（公开），in silence（沉默）均不符题意。
考点：固定短语辨析。
7. After the exam, my parents will meet me at the school gate ______.
A. in person
B. in common
C. in public
D. in silence
课堂练习
答案：D
解析：句意指向“学生每周午餐菜单”，menu（菜单）符合语境。message（信息）、method（方法）、time（时间）均不匹配。
考点：词汇应用与语境理解。
8. The weekly lunch ______ for students is put on the school website at a fixed time.
A. message
B. method
C. time
D. menu
课堂练习
答案：A
解析：第一空问“是否曾尝试过网购”，强调经历用现在完成时（Have tried）；第二空“上周买了钱包”是过去具体动作，用一般过去时（bought）。
9. — ______ you ever ______ online shopping
— Yes, I ______ a new wallet last week.
A. Have; tried; bought
B. Did; try; have bought
C. Have; tried; have bought
D. Did; try; bought
课堂练习
答案：B
解析：“since 2020”表示从过去持续到现在的状态，用现在完成时（has lived）；“yesterday”明确过去时间点，用一般过去时（went）。
10. Mr. Lee ______ in Shanghai since 2020, but he ______ to Beijing for a meeting yesterday.
A. lived; went
B. has lived; went
C. lived; has gone
D. has lived; has gone
课堂练习
答案：A
解析：“Not yet”提示询问“是否已经看过”，用现在完成时（Have seen）；
“next weekend”表将来计划，用一般将来时（will visit）。
11. — ______ the digital exhibition of Dunhuang
— Not yet. I ______ it next weekend.
A. Have you seen; will visit
B. Did you see; visit
C. Have you seen; visited
D. Did you see; will visit
Homework
Compulsory homework:
Write down your online or real trip, using the right tense.
Optional homework:
Polish your writing work and share it with your friends.
感谢观看
THANKS

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