资源简介

(共27张PPT)
Section A Grammar Focus-4c
Unit 10 I’ve had
this bike for three years.
R·八年级下册
1. I have owned the toy bear ____ more than
six years.
2. He has worked as a policeman ____ ten
years.
3. They have worked here ______ June.
4. She has studied English ______ she was
five.
Fill for or since in the blanks
for
for
since
since
Let’s read
How long has his son owned the train and railway set
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.
Grammar Focus
现在完成时
未完成用法
“未完成”句式
延续性动词与非延续性动词
延续性动词
非延续性动词转化方法
现在完成时（三）
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：我好久没有见到她了。
I haven’t seen her for a long time.
（2）现在完成时+ since +表示过去的时间点
例：自1984年以来，史密斯先生就在这里工作。Mr. Smith has worked here since 1984.
（3）现在完成时+since+从句
例：自上大学以来他学了大约5000个英语单词。
He has learned about 5000 English words since he went to college.
谓语动词用延续性动词，可以用how long提问。
It is + 时间段 +since +一般过去时的句子.
1.他的爷爷已经去世2年了。
2.Nick参军三年了。
It is 2 years since his grandpa died.
It is 3 years since Nick joined the army.
since , for 的用法:
for: (长达）for+ 时间段
He has kept the book for 2 weeks.
笔记
since: 自…...以来
1)
2)
3)
for+ ？
since+时间点
since+ 时间段+ ago
since+ 从句(句子要用一般过去时态）
for+时间段
She has taught English since he came here.
He has stayed here since 5 o’clock.
He has stayed here since 5 hours ago.
since＋一段时间＋ago＝for＋时间段;
since two weeks ago=for two weeks;
I have kept the library book for a week.
= I have kept the library book since a week ago.
在现在完成时态中，for与since引导的时间状语可以相互转换。
2.延续性动词与非延续性动词
(1)延续性动词表示经验、经历；
非延续性动词表示行为的结果。
非延续动词不能与表示一段时间的状语连用。有些非延续性动词可以用延续性动词替换并用在现在完成时中。
(2) 在现在完成时的句子中，若含有for或since引导的时间状语，则句中谓语一定要用延续性动词。非延续性动词转换为延续性动词的方法有：
第一类：短暂性动词 be+形容词或副词
die finish
open/close
fall ill/asleep
marry sb/get married to
be dead
be open/closed
be over
be ill/asleep
be married to
begin (start) (开始)
go there (去哪里)
come back (回来)
come here (来这里)
be on
be there
be back
be here
第二类：短暂性动词 be + 介词
start/begin
leave
join
be away from
be in/be a member of
be on
第三类：短暂性动词 另一个动词
buy borrow become put on
keep
have
be
wear
巧记瞬间性动词的转换：
开始离去借来还， 出生入死买到家，
穿衣入睡要感冒， 开开关关变结束。
1 begin be on 6 return be back
2 leave be away from 7 join be in
3 go be off 8 die be dead
4 borrow keep 9 buy have
5 come be here 10 arrive be here
10 reach be here 11 put on wear
12 fall asleep be asleep 13 catch a cold have a cold
14 open be open 15 close be closed
16 become be 17 end/finish be over
Tick or cross
A. How long has Mary left
How long has Mary been away
B. How long has he borrowed the book
How long has he kept the book
C. Maria has come back since Monday.
Maria has been back since Monday.
Fill in the blanks
1. Becky ________ (has been, has become) a
doctor for ten years. She likes her job very
much.
2. We are late. The movie ____________ (has
started, has been on) for ten minutes.
has been
has been on
3. Ken, you should return the book to the
library. You _________ (have borrowed,
have kept) it for more than two weeks.
4. I ________ (have bought, have had) this bike since I was ten, so I want to buy a new one.
have kept
have had
1. Jim is in Japan. He arrived there three days ago.
2. They are very hungry. Their last meal was ten hours ago.
4a
Rewrite the sentences using for or since.
Jim has been in Japan for three days.
They are very hungry because they have not eaten anything for ten hours/ since ten hours ago.
3. The boy has a toy gun. His mother bought it for him in 2022.
4. I know Anna. I first met her three years ago.
5. Linda is ill. She became ill on Monday.
The boy has had a toy gun since 2022.
I have known Anna for three years/since three years ago.
Linda has been ill since Monday.
4b
Fill in the blanks with the correct forms of the verbs in brackets.
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
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.
3. We _________ (have) a piano since last November. We _______ (buy) it from the Li family when they moved to the US last year.
haven’t been
miss
have had
bought
5. This museum _________ (be) here for over 20 years. It ___ (be) one of the oldest buildings in this small town.
has been
is
4c
Fill in the questions and ask two students. Then complete the chart.
1. Do you have a(n) ____________ How long have you had it
2. Do you own a(n) _____________ How long have you owned it
Summary
现在完成时的特殊疑问句的结构。
现在完成时中for和since的用法。
延续性动词和非延续性动词的用法。

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