人教版八年级下册Unit 8 Have you read Treasure Island yet? Section A Grammar -4c(共18张PPT)

(共18张PPT)
Section A (Grammar Focus-4c)
Unit 8 Have you read Treasure Island yet
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.
Grammar Focus
have/has + 过去分词
定义：表示过去发生或已经完成的某一动作对现在造成的影响或结果。常与 already, yet, just 等词连用。
现在完成时（一）
I’ve already finished reading it.
Have you read Little Women yet
现在完成时的构成
肯定句: 主语+have/has + v.-ed+其他
否定句: 主语+haven’t/hasn’t + v.-ed+其他
一般疑问句：Have/Has +主语+ v.-ed+ …
肯定答语: Yes, 主格代词+ have/has.
否定答语: No, 主格代词+ haven’t/hasn’t.
see-saw-seen; be-was, were-been
eat-ate-eaten; break-broke-broken
go-went-gone; take-took-taken
send-sent-sent; find-found-found
make-made-made; have-had-had
v.-ed 的变化形式大部分与动词过去式形式相同，但是不规则动词的变化形式没有规律，需要记忆
Have you ever seen the film “Harry Potter”
I’ve spent 3 years in the countryside.
1.表示动作到现在为止已经完成或刚刚完成
现在完成时的用法
2.动作发生在过去，强调对现在的结果、影响等
I have finished my work.
We have set up many new factories.
already “已经”，常用于肯定句中。一般置于助动词have/has之后，v.-ed 之前，但也可以放在句末。
just “刚刚”，常用于肯定句中。一般置于助动词have/has之后，v.-ed 之前。
yet 在现在完成时句型中常置于句末：
“已经”，常用在疑问句中,
2) “还，仍然”，常用于否定句和疑问句
与 already; just; yet 连用
1. He ____ not ______ (begin) to work ____.
2. I ____________ (finish) my homework _______.
3. We have ____ heard of her marriage.
4. I __________________ (solve) this problem.
5. ________________ (finish) your homework ____
6. I have _____ finished lunch.
yet
already
just
begun
has
have finished
have already solved
yet
Have you finished
just
根据句意及所给提示填空。
现在完成时 VS 一般过去时
现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，因此不能和表示过去的时间状语连用。
I have already done my homework.（不能用last night等）
I've been to Paris before.（不能用last year等）
2.一般过去时只表示过去的动作和状态，与现在无关。可以和表示过去的时间状语连用。
I did my homework last night.
When did you go to Paris （when 一定不要和现在完成时连用）
3. 日常对话中通常两种时态配合使用，开始提到一件事做没做或发生过时用现在完成时，说起这件事具体情形时用一般过去时。
— Have you been to Japan
— Yes, I have. I went there last year.
— Who did you go with
— …
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.
I’ve just drunk some tea
Have you found it
3. A: Do you know when Tom is leaving
B: ___________________. (already/leave)
A: When _____________ (leave)
B: This morning.
He has already left
did he leave
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)
haven’t told them yet
She has already seen the film
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
loves
has
read
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!
finished
write
hasn’t read
can’t wait to do sth. “迫不及待地做某事”
will be
will
4c
Complete the chart with information about you and a friend.
A: What books have you already read
B: I’ve already read Tom Sawyer and Harry
Potter.
A: What do you think of them
B: Well, I think Harry Potter was exciting,
but Tom Sawyer was a bit boring.
Experiences You Your friend Comments
Books I have already read
Movies I have already seen
Songs I have already heard
Summary
一、现在完成时的用法
二、现在完成时的构成
三、现在完成时的句型结构
四、already与yet在现在完成时中的用法
五、现在完成时与一般过去时的区别