2021-2022学年人教版八年级英语下册(Unit10SectionAGrammarFocus-4c课件共20张PPT)

(共20张PPT)
Unit 10 I’ve had this bike for
three years.
SectionA Grammar focus -4c
I have been to
Hongya Cave
I have been to Chongqing.
Qiansimen Bridge
Liziba Light Rail Station
Monument of Liberation
Ciqikou Ancient Town
Let's explore.
It has been here for five years.
past
now
during that time
Let’s explore.
It has been around since 1993.
past
now
1）现在完成时的特殊疑问句的结构是什么？用什么疑问词来询问拥有某物品的时间？
3）since 后面接什么
2）for 后面接什么
since 自…以来
She has taught English since 2017.
He has stayed here since 5 hours ago.
She has taught English since she came here.
for 长达 + 一段时间
I have lived here for 5 years.
+
时间点
一段时间+ago
从句（一般过去时)
Let’s explore.
It has been here for five years.
It has been around since 1993.
28 years
past
now
5 years
past
now
for + 一段时间
since + 时间点
判断下列哪个是时间段还是时间点，用for或since填空：
for + 时间段 since + 过去时间点
_____ 100 years
_____ 1 minute
_____ 2010
_____ three o’clock
_____ half an hour ago
_____ last year
_____ I was 10 years old
_____ more than 2 weeks
for
for
since
since
since
since
= one year ago
since
for
1._______ two years 2._______ two years ago
3._______ last month 4._______1999
5._______ yesterday 6._______4 o'clock
7._______ about 4 months 8. _______ she was a baby
9.________we were children 10. _______ six hours
since & for
for
since
since
for
since
since
since
since
since
for
I lived here in 2010.
I still live here now.
I have lived here for 12 years.
2010
now
I have lived here for twelve years.
=I have lived here since 2010.
延续性动词
1. Mr. Brown has had his TV ____ 15 years.
Mr. Brown has had his TV since ___________.
2. I’ve taken driving lessons _____last month.
I’ve taken driving lessons ____________.
3. My sister has had her cell phone ____a month.
My sister has had her cell phone _________________.
for
since
for
15 years ago
for one month
since a month ago
since & for的转换
Discussion time 1:关于since与for的区别与用法
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.
共同点:常用于现在完成时态(动词使用延续性动词)提问用How long
不同点：1)for+一段时间，表示“持续了…”
2)since+ 过去时间点，表示“自从...”
3)Since +...ago
4)since+ 过去时态句子
现在完成时
现在完成时的特殊疑问句的结构：
疑问词+have/has+主语+过去分词+其他
询问拥有时间的疑问词用how long。
2. 现在完成时中for和since的用法：
现在完成时表示一个动作或状态从过去某一 时刻开始一直持续到现在，并有可能持续下去。可以和表示一段时间的状语连用，如“for+时间段”“since+过去的时间点或从句”或“since+一段时间+ago”。
--We are late for the movie.
---Wow. The movie has begun.
---Iphone6 is beautiful.
---Sure. Mayun has bought one.
---They are in the room now.
---They have come into the room.
---He is a famous person, Steve Jobs.
---What a pity. He has died.
开始的动作在极短的时间里结束。
进来的动作在极短的时间里结束。
买的动作在极短的时间里结束。
死的动作在极短的时间里结束。
现在完成时
从“开始发生”到 “结束/终止”几乎同时或在极短的时间里（如‘几秒钟/几分钟内’）就完成了的动词称为“瞬间动词(也叫‘短暂动词’)”。瞬间动词可
以用于现在完成时。
瞬间动词
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开始 be on 6 return还 be back
2 leave离开 be away from 7 join加入 be in
3 go去 be off 8 die死 be dead
4 borrow借 keep 9 buy买 have
5 come来 be here 10 arrive到 be here
10 reach到 be here 11 put on穿 wear
12 fall asleep 入睡 be asleep 13 catch a cold 感冒 have a cold
14 open be open 15 close关 be closed
16 become变 be 17 end/finish结束 be over
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。
Jim is in Japan. He arrived there three days ago.
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.
Jim has been in Japan for three years.
They have been hungry for ten hours/since ten hours ago.
Rewrite the sentences using for or since.
I have had a camera since 2009.
I have known Anna for three years/ since three years ago.
Linda has been ill since Monday.
4a
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
always want
3. We _________ (have) a piano since last November. We __________ (buy) it from the Li family when they moved to the US last year.
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.
have had
bought
haven’t been
miss
5. This museum ___________ (be) here for over 20 years. It _____ (be) one of the oldest buildings in this small town.　　
has been
is
1. Do you have a(n) ________ How long have you had it
2. Do you own a(n) ________ How long have you owned it
Fill in the questions and ask two students. Then complete the chart.
4c
Things How long
Tony favorite book for two years
basketball since he was 10 years old
Student 1
Student 2