(共31张PPT)
人教八年级下
Section A Grammar Focus ~ 4c
Unit 10
I’ve had this bike for three years.
Learning Goals
通过本课的学习,学生能够:
①正确区别现在完成时与一般过去时的用法,在不同的语境中正确运用。
②正确理解瞬间动词在现在完成时中与延续性动词的相互转换。
③掌握现在完成时中for和since的用法。
Warming Up
a toy lion
How long have you had this ______
I’ve had it _____________.
for ten years
a magazine
How long have you had this ______
I’ve had it _____________.
for half a year
a bread maker
How long have you had this ______
I’ve had it _____________.
for two months
months
a scarf
How long have you had this ______
I’ve had it since______.
2019
a sweater
How long have you had this ______
I’ve had it since ___________.
I was a baby
a bike
How long have you had this ______
I’ve had it ________________.
years ago
since 3 years ago
Presentation
翻译下列句子。
1. —你那边那辆自行车买多久了
—我已经用了三年了。
—How long have you had that bike over there
—I’ve had it for three years.
2. —他儿子拥有这列火车和铁路有多久了
—他从四岁生日起就拥有它了。
3. —你踢过足球吗
—是的,我小时候踢过,但是我已经有一段时间没有踢了。
—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.
—How long has his son owned the train and railway set
Observe these sentences and then discuss the following questions.
①现在完成时的特殊疑问句结构是什么?用什么疑问词来询问拥有某物品的时间?
②for后面接什么?
③since后面接什么?
①现在完成时的特殊疑问句结构是什么?用什么疑问词来询问拥有某
品的时间?
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.
现在完成时的特殊疑问句结构:
疑问词(不作主语)+have/has+主语+过去分词+其他成分
我们用how long 来询问拥有的时间
(1) A: How long have you had that toy bear
B: I have owned the toy bear for more than six years.
(2) A: How long has he worked as a policeman
B: He has worked as a policeman for ten years.
②for后面接什么?
③since后面接什么?
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.
“for + 时间段”
“since + 过去的时间点或从句”
一、含 since 或 for 的现在完成时
某些动词的现在完成时可表示过去某一时间开始并一直持续到现在的动作或状态,常与“for + 时间段”
“since + 过去的时间点或从句”或“since + 时间段+ ago”连用。
They have worked here since June/since three months ago.
He has live here for eight years.
与how long, for 或since搭配使用在现在完成时中的动词有什么共同特点?
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.
D. Tony has bought the computer for two years.
Tony has had the computer for two years.
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二、现在完成时中的谓语动词
在含有现在完成时的肯定句中,与“for + 时间段”
“since + 过去的时间点或从句”或“since + 时间段 + ago”连用的动词必须为延续性动词。常见的延续性动词有have、live、teach、learn、work、study 、know 等;常见的非延续性动词(词组)有come、go、leave、start、die、finish、become、join、buy、get married 等。
这块手表我买了两年了。
( ) I have bought this watch for two years.
( ) I have had this watch for two years.
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【拓展】部分非延续性动词(词组)和与之对应的延续性动词(词组)的表达:
非延续性动词(词组) 延续性动词(词组)
become be
borrow keep
buy/catch have
get up be up
fall asleep be asleep
make friends be friends
finish be over
leave be away (from)
非延续性动词(词组) 延续性动词(词组)
open be open
close be closed
lose be lost
die be dead
join be a member of/be in
begin/start be on
come/go/arrive be in/at
turn on/off be on/off
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.
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.
has been
has been on
have kept
have had
Instant Training
4a Rewrite the sentences using for or since.
1. 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.
____________________________________________
Jim has been in Japan for three days.
They have not eaten anything for ten hours.
I have had a camera since 2009.
Practice
4. I know Anna. I first met her three years ago.
_____________________________________________
5. Linda is ill. She became ill on Monday.
_____________________________________________
I have known Anna for three years.
Linda has been ill since Monday.
4b Fill in the blanks with the correct forms of the verbs in brackets.
1. 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.
3.We ____________ (have) a piano since last November. We ___________ (buy) it from the Li family when they moved to the US last year.
have never been
go
have never owned
have always wanted
have had
bought
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.
5.This museum _____________ (be) here for over 20 years. It ______ (be) one of the oldest buildings in this small town.
have not/haven’t been
miss
has been
is
Free talk
You are expected to make at least five sentences using present perfect tense with continuation verbs.
Production
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
Students Things How long
Tony favorite book for two years
basketball since he was 10 years old
Student 1
Student 2
Exercises
一、根据句意选用for或 since完成句子。
1. I’ve known him four years.
2. We’ve lived here I was a child.
3. Jennie’s waited for him twenty-five minutes.
4. It’s been three years I last saw her.
5. Lucy has been so worried about it you told her.
for
since
for
since
since
二、用括号内所给单词的适当形式填空。
1. I (be) at work since eight o’clock, but I’m going to leave soon.
2. We (be) on holiday last week.
3. I (wait) at the restaurant for an hour, and then I left.
4. We must get a new car. We (have) this one for ten years.
5. I’m a vegetarian. I (not eat) meat since I was a teenager.
have been
were
have waited
have had
haven’t eaten
三、同义句改写,每空一词。
1. Her parents came to China five years ago.
Her parents China since five years ago.
2. My father left on business two weeks ago.
My father on business two weeks.
3. I got to know Jack last week.
I Jack last week.
have been in
has been away for
have known since
4. Susan bought the coat two days ago.
Susan the coat two days ago.
5. I began to play the piano in 2006.
I the piano 2006.
has had for
have played since
Summary
1.Grammar:
含有since和for形式的现在完成时。
2. Key words and expressions: hometown