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(共22张PPT)
In this class,
we will
master the use of the present perfect tense.
use the present perfect tense to talk about your experience of sharing.
learn to use for and since in the present perfect tense.









Activity 1: Brainstorm
They always help teachers carry homework books to the office.
Guess who they are.
They have been subject representatives since Grade 7.
They have worked together for over one year.
Activity 2: Ask and answer
Q1: How long have you studied in this middle school
A: I have studied in this school for two years.
A: I have studied in this school for since 2025.
Q2: How long have you known your deskmate
I have ______ for/since ______.
时间段
过去时间点
Think and choose
Sort(分类) the following time expressions into the correct columns.
yesterday afternoon, 2023, graduation from primary school
three days, two hours, ten minutes
Read and find
Complete the sentences with for or since.
1. We have been friends _______ Grade 3.
2. They have been together _______ three years.
3. _______ last year, we’ve shared a lot of happy moments.
since
for
Since
6
过去时间点
时间段
过去时间点
“since + 时间段 + ago”
与“for + 时间段”有时可互换
They have been together _______ three years ago.
since
Practice：
1. My brother has been in Beijing ______ 2020.
2. We have known each other ______ five years.
3. She hasn’t eaten anything ______ this morning.
4. They have lived in this house ______ a long time.
5. He has worked in this company ______ he graduated from college.
6. I have had this bike ______ three months.
7. The rain has lasted ______ 8 o’clock.
since
for
since
for
since
for
since
Tip：for + 一段时间；since + 过去时间点
Think and distinguish(辨别)
They have been together for three years.
They have joined the club for three years.
Which one is correct
当现在完成时与“for + 一段时间”或“since + 时间点”连用时，
动词必须是延续性动词
He has joined the club for three years.
He has been in the club for three years.
I have had the book for two weeks.
I have bought the book for two weeks.
She has left home for three days.
She has been away from home since last Monday.
The film has begun for ten minutes.
The film has been on for ten minutes.
His grandma has been dead since 2021.
His grandma has died for five years.
They have been here for a week.
They have arrived here for a week.
延续性动词与非延续性动词
瞬间动词 （不可直接 + for/since） 对应延续性表达 （可 + for/since） 例句对比
join （加入团体 / 俱乐部 / 班级）
buy（买）
leave（离开）
begin / start（开始）
die（死亡）
come / arrive / get to（到达 / 来到）
be in + 组织
be a member of + 组织
have（拥有）
be away (from)
（不在 / 离开的状态）
be on
（进行中 / 上映中）
be dead（去世的状态）
be here /be in + 地点
（在某地的状态）
Read and complete
1. He joined the army two years ago.
He ______ ______ in the army ______ two years.
2. I bought the pen last month.
I ______ ______ the pen ______ last month.
3. The meeting began ten minutes ago.
The meeting ______ ______ ______ for ten minutes.
4. She left our school two weeks ago.
She ______ ______ ______ from our school for two weeks.
Rewrite the sentences.
has been for
have had since
has been on
has been away
Ask and answer
Q1: ____ ____ has ____ been in the army
A: He has been in the army for two years.
A: I have had the pen since last month.
Q2: ____ ____ ____ ___ ____ the pen
A: The meeting has been on for ten minutes.
Q3: ________________________________
How long he
How long have you had
How long has the meeting been on
在对现在完成时的时间状语进行提问时，常用how long。
_______ + have/has+主语+过去分词+其他成分
How long
Complete the news article with for, since and the correct form of the words in brackets.
Most people hope to receive birthday gifts. But Jimmy Teng, or “Uncle Jimmy”, does things differently.
7
Every year, on 22 March – his birthday – he 2 _______ (offer) free ice creams. He has done this 3 _______ his 70th birthday.
The 74-year-old has sold ice creams 1 ______ the past 17 years in Singapore.
for
offers
since
He 6 _______ (enjoy) talking with his customers. Many of them have become his friends 7 _______ they first met. Some students helped him set up social media pages. He has made many friends online 8 ______ then.
This year, Uncle Jimmy plans to give away 800 ice creams. “People 4 __________ (be) quite stressed recently and I want to help,” he said. “Sharing has made me feel happy
5 _______ the past four years.”
have been
for
enjoys
since
since
The 74-year-old has sold ice creams for the past 17 years in Singapore.
He has done this since his 70th birthday.
Every year, on 22 March – his birthday – he offers free ice creams.
Some students helped him set up social media pages.
Read these sentences.
体会不同时态的语用功能。
1. How does he feel about sharing
Sharing has made him feel happy.
2. What do you think are the priceless gifts
I think the priceless gifts here are not just the free ice creams, but also the joy of sharing and the friendships he built.
Read and complete
Read the news article again and complete the thinking map of Uncle Jimmy’s story.
On 22 March
since
for
since
the importance of sharing
Activity 6: Discuss and talk
Last term
I shared my study notes with my classmate for a month. He was weak in math, so I helped him.
It made me feel proud when he got better grades.
Sharing has taught me that helping others helps myself too.
现在完成时
for
since
for/since
后接时间段r
后接时间点r
for + 一段时间
= since + 一段时间 + ago
r
后跟延续性动词
1. Every year, on 22 March-his birthday – he offers free ice creams.
每年3月22日，他的生日，他都会提供免费的冰激凌。
offer v. 提供，给予
offer sb. sth. / offer sth. to sb. 为某人提供某物
He offers free ice creams
to people.
He offers people free ice creams.
offer to do sth. 主动提出要做某事，愿意做某事
e.g. The kids offered to do the dishes.
孩子们主动要求洗盘子。
2. This year, Uncle Jimmy plans to give away 800 ice creams.
今年，吉米叔叔计划送800个冰激凌。
plan v. 计划
e.g. We plan to go swimming after school this afternoon.
我们计划今天下午放学后去游泳。
plan to do sth. 计划做某事
plan n. 计划
have a plan 有计划
make a plan 制定计划
e.g. Do you have any plans for the summer
这个夏天你有什么打算？
3. People are quite stressed recently and I want to help.
最近人们压力很大，我想帮忙。
quite adv. 很；较为
e.g. The talent show was quite boring.
这场才艺秀很无聊。
quite a few 相当多
e.g. We saw quite a few apples on the trees.
我们看见树上有相当多的苹果。
quite +(a / an)+形容词+名词
e.g. He’s quite a good soccer player.
他是个相当不错的足球运动员。
修饰形容词或副词
+可数名词复数
allow v. 使有可能；允许
4. Sharing has allowed / shown / taught me…
allow sb. to do sth. / allow doing sth.
e.g. Our teacher allows us to go out for a walk after class.
我们老师允许我们课后出去散步。
They don’t allow talking loudly in the library.
他们不允许在图书馆里大声说话。

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