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Unit 1 Past and present
（Grammar）
年 级：八年级 学 科：英语（译林版）

Read and find out more about Shenzhen’s changes.
Presentation
What tense is used in these sentences?
Presentation
Present perfect tense
现在完成时
What tense is used in these sentences?
Presentation
1. He’s lived there since he finished college.
2. Transport has also improved a lot. People can get around the city easily.
3. I’ve only been there once.
Present perfect tense
现在完成时
_________+_________
have/has
done
the past participles of verbs
Presentation
He’s lived there since he finished college.
自大学毕业以来，他就一直住在那里。
We use the present perfect tense to talk about:
① an action that started in the past and continues to the present;（从过去持续到现在的动作或状态）;
present
past
has lived there
finished college
Presentation
Transport has also improved a lot.
交通也有了很大的改善。
② an action that happened in the past and has a connection with the ______________ (past, present);
（动作发生在过去但对现在有一定的影响）;
present
present
past
people can get around the city easily
Transport improved
Presentation
I have been to Beijing many times. 我去过北京好多次了。
③ how many times an action has happened up to ______________(the present, some point in the future).
（表示某个动作从过去到现在发生的次数）
the present
past
present
Presentation
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}Time adverbials
Examples
1. for +一段时间
2.since+过去的时间点或一般过去时从句
4.ever, never, before
5.time adverbials indicating the number of times
What time adverbials usually appear in sentences with the present perfect tense?
3.just, already, yet, recently, over(the past/last...) years, so far, till now, up to now, by now
for five days
since last Monday, since he arrived
three times
Presentation
Form the past participles of verbs
Rules of forming the past participles of regular verbs
Presentation
Form the past participles of verbs
Rules of forming the past participles of irregular verbs
Presentation
Form the sentence structures
have/has + done
have/has+ not + done
Presentation
Form the sentence structures
Have/Has + subject+ done...?
Yes, subject + have/has.
No, subject + haven’t/hasn’t.
Finish Part A on page 13
Practice
has changed
has
turned
has improved
have
moved
built
haven’t visited
Q: Why should we use the present perfect tense?
Finish Part B on page 14
Practice
found
has worked
left
went
has
returned
bought
have visited
指代前文提到的某个过去时间点之后，动作从该时间点开始持续或重复到现在。
Finish Part C on page 14
Practice
have lived
have been
have fallen
have been
Have
noticed
are
enjoy
单数形式：there has been + 单数名词
复数形式：there have been + 复数名词
Production
Housing
We used to live in small houses, but most families have moved into new buildings.
Have there been great changes in your hometown?
Production
Have there been great changes in your hometown?
Culture
Environment
Industry
The quality of life
Transport
Production
A: Hi! Long time no see. I heard you went back to your hometown last month. How was the visit?
B: Oh, it’s amazing!_____________________________________________.
A: Wow, that’s great. My hometown has changed a lot too.______________
_____________________________________________________________.
B: Really? ____________________________________________________.
A: That’s cool. In my hometown, __________________________________.
B: Times really have changed. I think our hometowns will become even better in the future.
A: I agree. I can’t wait to go back during the holiday to see more changes!
Homework
Compulsory homework:
1. Review the grammar rules of the present perfect tense.
2. Write an article about the changes in your hometown, using the present perfect tense.
Optional homework:
Interview your classmates and know more about the changes in their hometown.
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