资源简介

(共33张PPT)
（人教新目标版）八下英语
Period 3 Section A 4a-4c
Unit 10
I've had this bike for three years.
Learning objectives
Teaching aims（教学目标）
1．学会谈论财产和周围的事物
2. 能够熟练的运用现在完成时态
3. 能区分运用现在完成时与一般过去时
Language points（语言点）
要求掌握以下句式： How long has it been there
It has been there for …/since …/as long as …
要求掌握以下单词
动词： have, own, serve, move
名词： gun, sand, hometown
词组：be back to, one of, be away, be full of, run around, hundreds of
gun
n. 枪；炮
sand
n. 沙滩；沙
a toy gun 玩具枪
New words
hometown
n. 家乡；故乡
New words
past

I read Little Woman.
I decide to write about it for English class.
I have already finished
reading Little Woman.
1. We use the present perfect tense to talk about an action that happened
in the past and has a connection with the present.
表示在以前某个时间已经发生的行为或曾经做过的事情对目前有某种
影响。
present
present perfect
现在完成时的用法一
Lead in
past

I read The Old Man and the Sea for the first time.
I'm not tired of it.
Even though I've already read The Old Man and the Sea three times, I'm not tired of it yet.
present
present perfect
I read The Old
Man and the Sea
for the second time.
2. We also use the present perfect tense to talk about how many
times an action has happened till now.
表示一个动作到现在已经发生了多少次。
I read The Old Man and the Sea for the third time.
现在完成时的用法二
Lead in
3. We use the present perfect tense to talk about an action that started in
the past and continues to the present (or may continue to the future).
表示过去发生的动作一直延续到现在（可能持续到将来）。
past
present

future
He bought this bike three years ago.
I have this bike.
I've had this bike for three years.
present perfect
现在完成时的用法三
Lead in
Present perfect tense with since and for
Presentation
① I have owned this bike ___________________.
② I have had this bike _______________.
present
future
past
have this bike
three years ago
Complete the sentences according to the picture.
for three years
since three years ago
for+段时间
since+点时间
Presentation
5:30
five years
three minutes
2023
May 5
two months
点时间
点时间
段时间
点时间
段时间
段时间
点时间指的是具体的时间，比如1点、4月7日、2024年12月；段时间指的是一段时间内，比如说一点到三点，中间这两个小时就是一段时间。
试着说说哪些是点时间，哪些是段时间吧！
Presentation
since和for加时间的用法：
since: 自……以来
① He has owned a train and railway set since his fourth birthday.
② Judy has stayed here since 5 hours ago.
③ I've had the bear since I was baby.
since+从句 (从句常用一般过去时)
since+过去的点时间
since+段时间+ago
for: 长达
Amy has had her favorite book for three years.
for+段时间
Presentation
1. How long have you played football
2. How long have you been like this
3. How long have you had the dog
在对现在完成时的时间状语进行提问时，我们常用________。
这些动词都是延续性动词。
你踢足球踢了多长时间了？
你这个样子有多久了？
这条狗你养了多久了？
how long
观察句中动词，你能发现什么？
Presentation
★ 延续性动词表示能持续一段时间的动作或表示状
态的词，如work，stay，live，learn等。
★ 非延续性动词表示短暂的动作，从开始到结束，
几乎同时或在极短的时间里就完成，如come，go，
leave，start，begin，become，receive，die等。
1. 延续性动词与非延续性动词的定义
延续性动词(state verbs)与非延续性动词(action verbs)
Presentation
Look at these two sentences. Do you think they are right or wrong
1 I have bought this book for 3 years.
2 I have bought this book since 3 years ago.
3 He has died for three years.
非延续性动词表示的动作极其短暂，不能持续。因此，在现在完成时肯定句中不可与表示一段时间的状语连用，应改用延续性动词。
1 I have had this book for 3 years.
2 I have had this book since 3 years ago.
3 He has been dead for 3 years.
Presentation
1 I haven't heard from him for a year.
2 I haven't heard from him since March.
在现在完成时否定句中，因为非延续性动词的“非延续性”被否定，成为可以延续的状态，因而可与表示一段时间的状语连用，说明某个动作一直没发生。
Look at these two sentences. Do you think they are right or wrong
Presentation
① 用相应的延续性动词替换句中的非延续性动词，如：
非延续性动词转换为表持续的动词或者表状态的短语后即可在现在完成时中与表示一段时间的状语连用。
2. 延续性动词与非延续性动词的转换
borrow → kept
buy → had
become/ come/ go → be
put on → wear
Presentation
② 将非延续性动词转换为be+ 介词短语，如：
③ 将非延续性动词转换为be+名词，如：
join the army → be a soldier
go to school → be a student
begin/ start → be on
finish → be over
go to school → be in school
join → be in + 组织机构 / be a member of + 组织机构
Presentation
④ 用be+ adj./adv. 结构替换非延续性动词，如：
close/ open → be closed/open
come/ go back/ return → be back
come here → be here
fall asleep → be asleep
finish/ end → be over
marry → be married
die → be dead
Presentation
1. 在表示某一行为或状态持续多长时间时，根据终止时间的不同，选用不同的时态。
去年夏天我在这家酒店住了一周。
(讲去年夏天发生的事情，故用过去时)
迄今我已在这家酒店住了一周了。
(表示到现在为止已经住了一周，故用现在完成时)
下个月我要在这家酒店住一周时间。
(讲下个月的事情，故用一般将来时)
① I stayed in the hotel for a week last summer.
② I have stayed in the hotel for a week now.
③ I will stay in the hotel for a week next month.
Presentation
2. 除表示经历、持续至今的行为或状态外，现在完成时还表示到目前为止量的累积。
① I have learnt twenty English songs.
② I have collected 300 stamps.
我已经学会了20首英文歌曲。
我已经收集了300枚邮票。
Presentation
中考链接
I. 选择填空。
1. Alex ________ tea culture since he came to China in 2010.
A. studies B. studied
C. has studied D. was studying
【2024 河北】
2. Since I was born, my family ________ in the same flat.
A. live B. will live
C. are living D. have lived
【2024 扬州】
Practice
3. - Who will talk about the development of American
country music next week
- I suggest Brad. He ______ in Nashville, the home
of country music, since he was a child. 【2023 武汉】
A. lives B. lived C. has lived D. will live
4. I ________ China for three months and this is the first time I've tried on hanfu. 【2023 扬州】
A. have gone to B. have been to
C. have arrived in D. have been in
Practice
5. Mr. Smith ______ at the Natural History Museum for more than 10 years , so he knows a lot about insects. 【2023 十堰】
A. is working B. has worked
D. will work C. was working
Practice
have been
since
for
II. 根据句意在空白处填入适当的词或用括号内所给
词的正确形式填空。
1. I __________ (be) in Smart Start Group for a year.
【2024 山西】
2. Up to 200 kinds of frogs have died out __________ 1980.
【2024 苏州】
3. She has made crochet (钩针编织) artworks ______ about 50 years.
【2024 新疆维吾尔自治区新疆生产建设兵团】
Practice
1. Jim is in Japan. He arrived there three days ago.
2. They are very hungry. Their last meal was 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.
Rewrite the sentences using for or since.
Jim has been in Japan for three days.
P76
4a
Practice
Jim has been in Japan for three days.
They have not eaten for ten hours.
The boy has had a toy gun since 2022.
I have known Anna for three years.
Linda has been ill since Monday.
1. Jim is in Japan. He arrived there three days ago.
2. They are very hungry. Their last meal was 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.
Practice
Fill in the blanks with the correct forms of the verbs
in brackets.
P76
4b
have never been
go
have never owned
have always wanted
have had
bought
have not been / haven’t been
miss
has been
is
1. I _______________ (never be) to the beach before. I want to ____ (go)
next month and see the beautiful sand and sea.
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.
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.
Practice
Fill in the questions and ask two students. Then complete the chart.
P76
4c
Practice
现在完成时 相同点 不同点
for 1. 肯定句中与延续 性动词连用 2. 否定句中既可以 与延续性动词连 用，也可以与非 延续性动词连用 for + 时间段
since since + 时间段 + ago
since + 时间点
since + 从句 （一般过去时）
Summary
1. Can you use present perfect tense with since and for correctly
2. Can you tell the difference between state verbs and action verbs Can you use them correctly
Self-evaluation
Write down the conversation you made in 4c.
Homework

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