Unit 10 Section A Present Perfect Tense（课件）（17张PPT）

(共17张PPT)
Grade 8（下） Unit 10 Section A
Grammar Focus-4c
Present perfect tense
（现在完成时）
Have you ever learned about it
Yes, I have.
No, I haven't.
Has he/she ever learned about it
Yes, he/she has.
No, he/she hasn't.
have/has+ -ed
肯定回答：
否定回答：
肯定回答：
否定回答：
1. Which book does she like
A Journey to the West
B Little Women
C Three Kingdoms
2. How long has she learnt about it
A for 10 years
B for 24 years
C for 14 years
How long have you learnt about it
I have learnt about it for ____________.
I have learnt about it since _____________ .
十年
一个星期
规律
for+时间段
since+时间段+ago
a week
ten years
a week ago
一个星期前
十年以前
ten years ago
Grammar Focus
How long have you had that bike over there
I've had it for three years.
How long has his son owned the train and railway set
He's owned it since his fourth birthday.
Have you ever played football
Yes, I did when I was little, but I haven't played for a while now.
Fill in the branks with for or since.
1.I've known him _______ four years.
2.We've lived here ________ I was a child.
3.It has been three years __________I last saw her.
4.He has worked here _______ five years ago.
Practice 1
for
since
since
since
for+时间段
since+含有过去时态的从句
It has been+时间段+since+含有过去时态的从句
since+时间段+ago
时间段
时间点
时间段＋ago
含有过去时态的从句
for
since
It has been＋_____
时间段
时间段
+since＋含有过去时态的从句
+since＋含有过去时态的从句
Summary
与现在完成时
连用的时间状语
温馨提示：
It is＋______
I have learnt about it ____ ____ ____ _____.
I have learnt about it _____ _____ .
I have learnt about it ____ ___ ____ _____ ____ _____. ( since引导的从句)
It _____ ____ 34 years since I learnt about it.
It ____ 34 years since I learnt about it.
Practice 2
Rewrite this sentence:
since 34 years ago
since 1986
since it came out in 1986
is
has been
I have learnt about it for 34 years.
since+时间段+ago
since+时间点
for+时间段
since+过去时的从句
与现在完成时连用的时间状语的特点
Itis/has been+时间段+since从句
Practice 3
______________________________________________________.
2.They are very hungry. Their last meal was ten hours ago.
__________________________________________________________.
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.
_________________________________________________.
Rewrite the sentences using for or since.
4a
They have been hungry for ten hours
I have had a camera since 2009
I have known Anna since three years ago
Linda has been ill since Monday
1.Jim is in Japan. He arrived there three days ago.
Jim has been in Japan for three days
Review
主语 +动词过去式
主语+ have/has＋-ed
时态辨析
现在完成时
一般现在时
一般过去时
含有be动词
含有实义动词
is连着它他她
you用are
三单主语 动词用三单形式
其它主语 动词用原形
I用am
单数名词用is,复数名词全用are
Fill in the blanks with the correct forms of the verbs in brackets.
1.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.
3.We _____________(have) a piano since last November. We _________(buy) it from the Li family when they moved to the US last year.
Practice 4
4b
have never been
go
have never owned
always want
have had
bought
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.
4b
haven't been
miss
is
家乡
has been
Do you have a(n) ________
How long have you had it
Things
How long
Tony favorite book
for two years
basketball
since he was 10 years old
Student 1
Student 2
2. Write a conversation according to 4c.
熟
能
生
巧
Practice
1. Review the words and Grammar Focus.
makes
perfect.
Homework
Thank you!