2021-2022学年人教版英语八年级下册Unit10SectionAGrammarFocus-4c课件（25张）

(共25张PPT)
Unit 10 I’ve had this bike for three years.
Section A (Grammar Focus-4c)
By the end of this period, you will be able to
1. learn knowledge about present perfect tense with since and for;
2. write correct sentences with present perfect tense;
3. write about your favorite thing；
4. improve your writing by using different words and phrases with
similar meaning and add more related information.
Lead-in
What are these people doing
Yard sale
How long has his son owned the train and railway set
Grammar focus
How long have you had that bike over there
I’ve had it for three years.
Have you ever played football
He’s owned it since his fourth birthday.
Yes, I did when I was little, but I haven’t played for a while now.
我已经买了三年了。
他儿子拥有那套轨道火车玩具多久了？
你曾经踢过足球吗？
是的，小时候踢过，但是现在我有一段时间没踢了。
现在完成时（Ⅲ）
1. 现在完成时的“未完成用法”。
现在完成时表示动作或状态从过去某时开始，一直延续至今，还可能继续下去。这种用法称为“未完成用法”。此时常与for或since引导的时间状语（从句）连用。
“未完成”的句式：
（1）现在完成时+for+一段时间
例：I haven’t seen her for a long time.
我好久没有见到她了。
（2）现在完成时+since+表示过去的时间点
例：Mr. Smith has worked here since 1984.
自1984年以来，史密斯先生就在这里工作。
（3）现在完成时+since+从句
例：He has learned about 5000 English words since
he went to college.
自上大学以来他学了大约5000个英语单词。
谓语动词用延续性动词，可以用how long提问。
9
have
has
have
has
haven't
hasn't
Have
Has
have
has
haven't
hasn't
for
since
1. since后面可以接表示过去的时间点，也可以接表示过去的从句；表示动作或状态从过去某一时间开始直到现在的一段时间。
Tony has taught English in our school since last year.
自从去年，托尼就在我们学校教英语。
Tony has taught English in our school since he came to China last year.
自从去年来到中国，托尼就在我们学校教英语。
2. for后面可以接一个表示时间段的短语，表示动作或状态延续多长时间。如：
We have lived in Beijing for three years.
我们已经住在北京三年了。
3．since和for的相互转换：
(1)since＋时间段＋ago＝for＋时间段　如：
I have kept the book since two weeks ago.
＝I have kept the book for two weeks.
(2)since＋时间点＝for＋时间段　如：
It's 10 o'clock now. I have been here since 8 o'clock.
＝It's 10 o'clock now. I have been here for two hours.
4．常用的since句型：
(1)since＋从句(常用一般过去时)　如：
The Greens have lived in Beijing since they moved to Beijing from Paris.
自从他们从巴黎搬到北京后，格林一家一直住在北京。
(2)It is/has been＋时间段＋since＋从句(常用一般过去时)．如：
It is/has been two years since my brother joined the army.我哥哥参军已有两年了。
Rewrite the sentences using for or since.
4a
1. Jim is in Japan. He arrived there three days ago.
2. They are very hungry. Their last meal was ten hours
ago.
Jim has been in Japan for three days.
They have not eaten for ten hours.
3. I have a camera. I bought it in 2009.
4. I know Anna. I first met her three years ago.
5. Linda is ill. She became ill on Monday.
I have had a camera since 2009.
I have known Ann for three years/since three years ago.
Linda has been ill since Monday.
Fill in the blanks with the correct forms of the verbs in brackets.
4b
I _______________ (never be) to the water park before. I want to _____ (go) next month before the weather gets too cold.
2. They __________________ (never own) any pets, but they __________________ (always want) to have a dog.
have never been
go
have never owned
have always wanted
3. We _________ (have) a piano since last November. We
_______ (buy) it from the Li family when they moved
to the US last year.
4. Cathy and Amy ____________ (not be) back to their
hometown for two years. They ______ (miss) their
hometown a lot and hope to visit the place next year.
5. This museum _________ (be) here for over 20 years. It
_____ (be) one of the oldest buildings in this small town.　　
have had
bought
haven’t been
miss
has been
is
Fill in the questions and ask two students. Then complete the chart.
4c
1. Do you have a(n) ________________ How long have
you had it
2. Do you own a(n) _________________ How long have
you owned it
Things How long
Tony favorite book for two years
Basketball since he was 10 years old
Student 1
Student 2
一、用since或for填空。
1．He worked there ____________six years.
2．I have been learning English ___________I was ten years old.
3．Alison has been skating ___________five hours ago.
4．Mr. Smith has been there ____________ten years.
5．We've been friends ______________we left school.
for
since
since
for
since
1. ____ things in this cupboard, please.
A. Clear up B. Clear out
C. Clean up D. Put up
2. ____, I was surprised he know where I was because we
moved so often.
A. Excuse me B. Sorry
C. To be honest D. As for
B
C
Exercise
3. He ____ for ten years.
A. has been married B. married
C. got married D. has married
4. Which is the most beautiful place you have ever _____
A. went B. gone C. been
5. My brother ____ the army for nearly three years.
A. has joined B. has taken part in
C. has been in
A
C
C
三、按要求完成下列句子。
1．(2020·江苏淮安)我们自从加入同一个俱乐部就成了好朋友。(根据汉语意思完成句子)
We ________________good friends since we _____________the same club.
2．(2020·黑龙江牡丹江)Jim joined the mountain climbing club two years ago.(改为同义句)
Jim has ________________the mountain climbing club for two years.
have been
joined
been in
3．My uncle has lived in the city for several years.(改为否定句)
My uncle ______________lived in the city for several years.
4．The town library has been there since_five_years_ago．(就画线部分提问)
____________________has the town library been there
5．I borrowed this book last month.(同义句转换)
It ______________one month since I ________________this book.
has not
How long
has been
borrowed