(共34张PPT)
Present perfect tense
8A U5 GRAMMAR
Learning objectives
After this lesson, you will be able to:
1. learn when to use present perfect tense.
2. learn the structure of present perfect tense
3. master the adverbs already,yet, ever and never
4. apply present perfect tense to make up sentences
Experiencing
Part 01
Try Everything
Look how far you've come, you filled your heart with love
Baby you've done enough that cut your breath
PRESENT PERFECT TENSE
__________
When to use present perfect tense
__________
When to use present perfect tense
1) We use present perfect tense to talk about experiences. 谈论经历
Examples
I have been abroad two times.
Anna has never broken a leg.
When to use present perfect tense
2) We use present perfect tense to talk about an action
which started in the past and continues up to now.
谈论过去开始并持续到现在的动作
Examples
I have been a teacher for about 3 years.
We haven't seen Jennie for two days.
now
future
past
When to use present perfect tense
3) We use present perfect tense to talk about a past action
that still has the result at the present.
谈论过去发生但对现在仍有影响的行为
Examples
I have lost my wallet.=I don't have it now.
Jimmy has gone to America.=He isn't here now.
now
future
past
__________
Exploring
Part 02
What's the structure of present perfect tense
__________
Main structure
He has been to space.
subject
(主语)
have/has
past participle
(过去分词)
done
have / has
done
+
Main structure
主要结构
1.What is
past paticiple(过去分词)?
2.How will the structure change
in different kinds of sentences
have / has
done
+
Past paticiple 过去分词
regular verbs(规则动词)
irregular verbs(不规则动词)
Past participle of regular verbs
Base form
Simple past
Past participle
talk
talked
talked
live
lived
lived
study
studied
studied
stop
stopped
stopped
(1)一般动词,在词尾直接加“-ed ”
rules
(2)以不发音的“e”结尾,只在词尾加“d ”
(3)以“辅音字母 + y ”结尾,改 "y" 为 "i" ,再加“-ed”
(4)重读闭音节中,以“元音+辅音”结尾,先双写该辅音字母,再加“-ed”
Base form
Simple past
Past participle
p141 - 142
do
did
done
go
went
gone
be
was/were
been
break
broke
broken
say
said
said
spend
spent
spent
Past participle of irregular verbs
have / has
done
+
Main structure
主要结构
1.What is
past paticiple(过去分词)?
2.How will the structure change
in different kinds of sentences
Back to textbook
I've learnt to use chopsticks, ...
It's been a fantastic experience so far.
I've learnt a bit of t'ai chi, ...
We've already learnt a lot about Chinese culture and history.
The teachers have introduced us to Chinese painting as well.
We've also tried to paint some pictures ourselves.
I haven't had much success yet, ...
I've made many new friends...
基本结构:have / has
done
+
Task:Scan to underline all the sentences using present perfect tense.
Positive form
Negative form
have / has
done
+
Main structure
Positive form
Negative form
Question form
肯定式
否定式
疑问句式
Positive form
+
主语+have / has + done...
Negative form 否定形式
I haven't had much success yet, ...
主语+have / has not+done...
have not
=haven't
has not
=hasn't
Question form
Watch a video and find out the question form of present perfect tense.
Yes or No question
一般疑问句式
Have you ever imagined a future with me
Have
imagined
Have/has+主语+done...
No, I haven't.
Yes, I have.
Information question
特殊疑问句式
How long has he been gone
has
been
Wh-疑问词+have/has+主语+done...
Conclusion
Positive form
Negative form
Question form
肯定式:
否定式:
疑问句式:
主语+have / has + done...
主语+have / has not+done...
Have/has+主语+done...
Wh-疑问词+have/has+主语+done...
Present perfect tense with already, yet, ever and never.
already已经
yet 还;已经
ever 曾经
never 从未
用于肯定句中
用于否定句和疑问句末
用于肯定句和疑问句中
表示否定
Example
I have already finished my task.
Examples
I haven't finished my task yet.
Have you finished your task yet
Examples
He has ever been to Shanghai.
Has he ever been to Shanghai
Example
He has never been to Shanghai.
ATTENTION!!!
We use the adverbs already, ever and never (before/after) have/has and (before/after) the main verb .
We often use yet at the (beginning /end) of a question or a negative sentence.
already已经
yet 还;已经
ever 曾经
never 从未
Let's watch a movie for fun!
Ok~pick one from Netflix.
What about Bones
Emm, I've___________seen it.
Then how about The Grey Have you _______ watched it before
already
ever
Aha, nope.
But I'm not a fan of dark movies.
Ok, then Boys Girls
It's a romantic story!
I have ________ heard about this movie but I really want to enjoy a love movie.
never
By the way, the movie Space Jam is on.
Great, I haven't watched it __________. Let's go watch it tomorrow!
yet
Applying
Part 03
Practical drill 1
the simple present tense the present perfect tense
1 you play
2 we are
3 he goes
4 I spend
5 she says
6 they leaves
you have played
we have been
he has gone
I have spent
she has said
they have left
Change the words into the present perfect tense.
基本结构:have / has+done
Make the present perfect - it could be positive, negative or question.
1) (you /already/ keep a pet for three years)
________________________________________
2) (he / hurt his leg)
_________________________________
You've already kept a pet for three years.
3) (you / eat Thai food before)
_________________________________
4) (we / not / lose our tickets)
_________________________________
He has hurt his leg.
Have you eaten Thai food before
We haven't lost our tickets.
Practical drill 2
Lily hasn't finished her homework yet, so she can't go out.
否定式:have / has not+done
Translate the sentences with present perfect tense.
Lily尚未完成作业,所以不能出去玩.
Practical drill 3
I have been to Beijing twice.
肯定式:have / has+done
Translate the sentences with present perfect tense.
我曾经去过北京两次。
我从未去过北京。
I have never been to Beijing.
否定式:have / has not+done
In the past one hundred years, China has made great achievements.
基本结构:have / has+done
Translate the sentences with present perfect tense.
在过去的100年里,中国实现了许多伟大成就。
Homework
Finish the exercises on P71-73
Watch a video showing short clip using present perfect tense at:
https://haokan./v pd=wisenatural&vid=14163312150788809783
Collect lyrics using present perfect tense.
Thank you!