資源簡介

(共25張PPT)
Unit 1
This is me!
外研版2024八年級上冊英語
（Grammar）
Think and share
目 錄
CONTENTS
04 Exercise
03 Production
02 Presentation
01 Lead-in
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01 Lead-in
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Lead-in
(a) I haven't told Maddie yet...
(b) I have already learnt that I am what I am.
Now find one more sentence with these structures in the reading passage.
Read the sentences from the reading passage and summarise the grammar rules.
現(xiàn)在完成時
have/had /has+done
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02 Presentation
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Presentation
定義-1
定義1：從過去開始并延續(xù)到現(xiàn)在，可能還將延續(xù)下去
要點：過去開始+延續(xù)到現(xiàn)在
eg: a) Lily has studied in No.1 Middle School since two years ago.
b) They have lived in Changzhou for ten years.
該定義強(qiáng)調(diào)在“現(xiàn)在”這個時間點，動作是存在的。
動詞在now這個點是存在的，可能到此結(jié)束，也可能繼續(xù)下去
注意：若在now這個點動作不存在，則是一般過去時。
A
B
now
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定義2：動作發(fā)生在過去并已結(jié)束，但對現(xiàn)在有影響或與某種聯(lián)系。
要點：過去發(fā)生+對現(xiàn)在有影響/聯(lián)系
eg：a) Who has cleaned the room. It’s clean and tidy.
b) I won’t see the film with you. I have seen it.
該定義強(qiáng)調(diào)過去動作對現(xiàn)在的影響或聯(lián)系；若不存在影響或練習(xí)，則是一般過去時。
Presentation
定義-2
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定義3：在過去一段時間內(nèi)，動作發(fā)生了多次。（包括零次never）
要點：次數(shù)
eg：
a) We have been to the UK three times.
b) How many times has Peter visited the Shanghai Museum over the
past years
Presentation
定義-3
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Presentation
現(xiàn)在完成時的構(gòu)成
現(xiàn)在完成時謂語由“助動詞have/has+動詞的過去分詞”構(gòu)成。
1.肯定式
結(jié)構(gòu)：主語+have/has + 動詞的過去分詞(+其他).
I/You have worked.我/你工作了。
He/She/lt has worked.他/她工作了。/它奏效了。
We/You/They have worked.我們/你們/他們工作了。
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Presentation
現(xiàn)在完成時的構(gòu)成
2.否定式
結(jié)構(gòu)：主語+have/has+not+動詞的過去分詞(+其他).
I /You have not worked. 我/你還沒有工作。
He/She/It has not worked. 他/她還沒有工作。
We/You/They have notworked.
我們/你們/他們還沒有工作。
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Presentation
現(xiàn)在完成時的構(gòu)成
3.疑問式
結(jié)構(gòu)：Have/Has +主語+動詞的過去分詞(+其他)
Have //you worked 我/你工作了嗎
Has he/she/it worked 他/她工作了嗎 /它奏效了嗎
Have we/you/they worked 我們/你們/他們工作了嗎
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Presentation
現(xiàn)在完成時的構(gòu)成
4.簡略回答
結(jié)構(gòu)：肯定回答:Yes，主語 +have/has.
否定回答:No，主語+haven't/hasn't.
Have we/you/they worked 我們/你們/他們工作了嗎
肯定:Yes,you/ have. 是的,你/我工作了。
否定: No, you/ haven't. 不，你/我沒有。沒有。
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Presentation
動詞的過去分詞的構(gòu)成原則
1.規(guī)則動詞的變化規(guī)則
（1）大部分動詞在詞尾直接加 -ed
clean→cleaned 打掃 help → helped 幫助 play→ played 玩耍
（2）動詞以不發(fā)音的字母e結(jié)尾時，直接加 -d
like → liked 喜歡 live →lived 居住 love → loved 喜愛
（3）動詞以“輔音字母+y”結(jié)尾時,變y為i再加 -ed
try→ tried 嘗試 study→studied 學(xué)習(xí) marry→married 結(jié)婚
（4）動詞為重讀閉音節(jié)且詞尾只有一個輔音字母時,須雙寫這個輔音字母再加-ed
plan→planned 計劃 stop→stopped 停止 prefer→preferred 更喜歡
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Presentation
動詞的過去分詞的構(gòu)成原則
2.不規(guī)則動詞的變化規(guī)則
須根據(jù)不規(guī)則動詞變化表專門記憶
see-seen 看到 hear heard 聽到
go-gone 去 fnd-found 發(fā)現(xiàn)
eat-eatenl吃 beat-beat 打敗
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Presentation
現(xiàn)在完成時的標(biāo)志
(1) 常與just, already, yet, ever , never ,before,sofar 等連用,強(qiáng)調(diào)動作完成,
不強(qiáng)調(diào)動作的持續(xù)。
Have you ever been to Japan
你曾經(jīng)去過日本嗎
I have just finished my homework.
我剛剛完成我的家庭作業(yè)。
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Presentation
現(xiàn)在完成時的標(biāo)志
(2) for+時間段;
since+過去時間點;
since+時間段+ago;
since+ 一般過去時的句子。
They have known each other for five years. 他們相識5年了。
I haven't played soccer since I left school.
自從離開學(xué)校后我就沒踢過足球。
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03 Production
1. I/ just / cut my long hair
.
2. She / never / worry about / her looks
.
3. l/just / paint a beautiful flower / on my face
.
4. Chris / always / wear / a pair of glasses
.
5.Jessica / already/ change her opinion /on her looks
.
Write sentences with the present perfect tense.
I have cut my long hair.
She haven’t worried about her looks .
I have painted a beautiful flower on my face.
Chirs has worn a pair pf glasses.
Jessica has already changed her opinion on her looks.
Production
I was the tallest student in my class. Now, I'm still the tallest. I sat on the last row in primary school. Now at junior high, I'm still sitting on the last row. People always look at me in surprise. "You must be good at basketball," my classmates at primary school always said that. Now at junior high, my classmates say the same. In fact, I'm not good at basketball at all. But being tall is not always bad. lt makes me easy to recognise, and I can help others reach things down.I couldn't accept my height, but I learn to do it now. I'm proud of myself.
Rewrite the underlined sentences using the present perfect tense.
Production
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04 Exercise
Exercise
一、單項選擇
1．—Wow, your bike looks really new. I wonder ________.
—My father bought it for me as a birthday gift last year.
A．how long have you had it B．how soon will you have it
C．how long you have had it D．how soon you will have it
2．The man _____ himself to the hot search list several times because of photos with famous singers.
A．makes B．is making C．will make D．has made
3．—Where is your brother I haven’t seen him recently.
—Oh, he has _____ to Beijing for a meeting. He has _____ there for a week.
A．gone; gone B．been; gone C．gone; been D．been; been
C
D
C
Exercise
4．—Simon, you are late. The match ________ since half an hour ago.
—What a pity! All the basketball players have left.
A．has started B．has been on C．has finished D．has been over
5．Tom _____ many places in China since three years ago.
A．visits B．visited C．has visited D．will visit
6．______ he ever ______the film before
A．Does; see B．Have; seen C．Did; see D．Has; seen
7．Lily says she _____ the book for ten days and she has to return it to the library today.
A．has borrowed B．borrowed C．has kept D．is going to borrow
D
C
D
C
Exercise
8．They have ______ finished doing the housework, but they haven’t done their homework ________.
A．a(chǎn)lready; yet B．yet; already C．yet; yet D．a(chǎn)lready; already
9．Brian ______ opera since he came to China in 2021.
A．studies B．studied C．has studied D．will study
10．My parents _______ Beijing on business for a whole week, so I live with my grandparents these days.
A．have been to B．have been in C．have gone to D．have arrived in
11．—Is Mr. Clark there I need to talk to him.
—Sorry, he _____ Shanghai on business for three days.
A．went to B．has gone to C．has been in D．has been to
A
C
B
C
Exercise
12．Volunteers in Nanjing ________ over 1,000 trees along Yangtze river since the ‘Protect Mother River’ project began in 2021.
A．plant B．planted C．have planted D．will plant
13．—Mom, I want to watch The Lion King on CCTV Channel 6 tonight.
—Oh, e on! It ________ for a few minutes.
A．has begun B．will begin C．has been on D．will be on
14．—Why are you in such a hurry —Because the class ________ for 10 minutes.
A．is on B．begins C．has been on D．has begun
15．Daming ________ a member of the school space club for two years.
A．was B．is C．will be D．has been
C
C
C
D
Thank you

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