资源简介

(共28张PPT)
现在完成时
Present Perfect Tense
Unit 8 Have you read Treasure Island yet SectionA
目录
01
02
03
04
揭开现在完成时的神秘面纱
现在完成时与一般过去时：差异大揭秘！
现在完成时构成与标志词学习探索
现在完成时句型运用与交流
01
揭开现在完成时的神秘面纱
开启现在完成时的学习之旅
现在完成时导入
Have you eaten breakfast
Yes,I have.
No,I haven't.
Yes,I have.
now
past
I have eaten breakfast .
I ate breakfast
just now.
I needn't eat breakfast now.
影响
No,I haven't.
now
past
I haven't eaten breakfast .
I didn't eat breakfast just now.
I need to eat breakfast now.
影响
现在完成时导入
Have you eaten breakfast
Yes,I have.
No,I haven't.
02 Unveiling the Mysteries of Present Perfect Tense
现在完成时构成与标志词学习探索
a. 一般直接在词尾加上ed。
look — looked—looked
b.以不发音的e结尾的动词，直接加d。
move—moved—moved
c.以辅音字母加y结尾的动词，改y为i,再加ed。
carry—carried—carried
d.以一个辅音字母结尾的重读闭音节动词，双写
词尾最后一个辅音字母，再加ed。
stop—stopped—stopped
1）规则变化与动词过去式的变化规则相同
规则动词过去分词变化
2
规则动词过去分词变化
2
2）不规则变化，没有规律，需要记忆
AAA型
cut—cut—cut
ABB型
bring—brought—brought
ABA型
come—came—come
ABC型
do—did—done
AAB型
beat—beat—beaten
03
Now, Let's Master Present Perfect Tense in Conversations!
现在完成时句型运用与交流
I have already eaten breakfast.
He has eaten breakfast.
观察：现在完成时的谓语结构是什么？
主语 + have/has + done +其他
注意： have或has是助动词
has 用于第三人称单数，
其他人称一律用have。
现在完成时的构成
1
观察：现在完成时的肯定句如何变成否定句？
I have already eaten breakfast.
I have not eaten breakfast yet.
haven't
She has eaten breakfast already.
She has not eaten breakfast yet.
hasn't
现在完成时的构成
1
在have/has后+not，缩写
为haven't /hasn't
观察：现在完成时的陈述句如何变成一般疑问句？如何作回答？
I have already eaten breakfast.
Have you eaten breakfast
Yes, I have./No, I haven't.
She has had breakfast already.
Has she already had breakfast
Yes, she has./No, she hasn't.
现在完成时的构成
1
把助动词have/has放句首，其后照抄，句末“？”
回答用Yes,...have/has./ No,...haven't/hasn't.
already 用于肯定句中或句末
yet 常用于否定句中和疑问句中
just 常用于肯定句中表示“刚才”
I have already taught him some English.
Bob hasn't gone to school yet.
Have you had you lunch yet
Mom has just cooked in the kitchen.
already 、yet和just 都用在现在完成时句子中，但有什么区别？
（2）现在完成时的用法
用法 例句
表示过去发生的动作或已经完成的动作对现在造成的影响和结果。 -Have you had your breakfast yet
-Yes,I have.I've just had it.
-No,I haven't yet.
already 用于肯定句中或句末
yet 常用于否定句中和疑问句中
just 常用于肯定句中表示“刚才”
04
现在完成时与一般过去时：差异大揭秘！
深入探究时态区别与拓展应用
现在完成时与一般过去时：用法大不同
时态
时间
谓语
1. I have already eaten my breakfast.
I ate my breakfast just now.
2.My mother has lived in Dali for a long time.
My mother lived in Dali two years ago.
3.Have you ever read that book before
Did you read that book yesterday
现在完成时与一般过去时区别
时态 现在完成时 一般过去时
时间 already，yet，ever，before， never,twice, 等 yesterday,...ago,last...,
just now 等
谓语 have/has +done 1.was/were
2.did
注意：
现在完成时和一般过去时所表示的动作都发生在过去，但它们所强调的重点不同：
现在完成时侧重于对现在的影响;而一般过去时侧重于动作发生在过去某个时候.
Grammar
Focus
Have you read Little Women yet Yes,I have. / No,I haven't
Has Tina read Treasure Island yet Yes,she has.She thinks it's fantastic.
Have you decided which book to write about yet Yes,I have.I've already finished reading it.It was really good.
already 用于肯定句中或句末
yet 常用于否定句中和疑问句中
just 常用于肯定句中表示“刚才”
I’ve just drunk some tea
Have you found it yet
He has already left
4a Use the words in brackets to complete the conversations.
1. A: Would you like something to drink
B: No, thanks. ______________________.
(just/drink some tea)
2. A: I heard you lost your key.
____________________ (find)
B: No, not yet.
3. A: Do you know when Tom is leaving
B:____________________ . (already/leave)
A: When ________________ (leave)
B: This morning.
4. A: Is your sister going to the movies with us
tonight
B: No. ___________________________.
(already/see the film)
5. A: What do your parents think about our
plan
B: I ____________________________.
(not/tell them/yet)
did he leave
She has already seen the film
haven’t told them yet
4a Use the words in brackets to complete the conversations.
4b Fill in the blanks with the correct forms of the words in brackets.
Sally _______ (love) reading. In the morning, she reads the newspaper and in the evening she reads books. She _____ already ______ (read) more than 100 different books! Her favorite kind of books is science fiction. She is interested in science and technology and loves to imagine what the world ______ (be) like in 50 years. She __________ (finish) reading a book about robots last week and ____________(write) a book report about it next week for her French class. Every time she is in the library, Sally looks at the many books she_____________ (not read) yet and she can’t wait to read them!
loves
has
read
will be
finished
will write
hasn’t read
4c Complete the chart with information about you and a friend.
You Your friend Comments
Books I have already read
Movies I have already seen
Songs I have already heard
...
...
4c Complete the chart with information about you and a friend.
What books have you already read
I have already read Tom Sawyer and Harry Potter.
What do you think of them
Well, I think Harry Potter was exciting,
but Tom Sawyer was a bit boring.
Homework
1.自己巩固今天所学的知识点
2.自己刷一些相关的现在完成时的题目
3.预习课本57页
4.第八单元单词section A 2+1
谢谢聆听

展开更多......

收起↑