初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)
初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)
語(yǔ)言知識(shí)點(diǎn)課作為閱讀課的組成部分,目前多以教師輸入為主,學(xué)生被動(dòng)接受為多,實(shí)效性有待提高。那么初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)該怎么寫(xiě)呢?下面是小編為大家整理的初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)，希望對(duì)大家有幫助。
初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)篇一
have或has是助動(dòng)詞，has用于第三人稱(chēng)單數(shù)，其它人稱(chēng)一律用have。
疑問(wèn)句
現(xiàn)在完成時(shí)的一般疑問(wèn)句式是把助動(dòng)詞have或has提到主語(yǔ)之前。
回答：Yes, … have(has).
No, … haven’t(hasn’t).
否定句：
現(xiàn)在完成時(shí)的否定句式是“haven't(hasn't)+過(guò)去分詞”。
3. 現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ):already, just, yet, since, ever, never;
4. 與一般過(guò)去時(shí)的區(qū)別：一般過(guò)去時(shí)是強(qiáng)調(diào)動(dòng)作在過(guò)去發(fā)生，而現(xiàn)在完成時(shí)是強(qiáng)調(diào)過(guò)去發(fā)生的動(dòng)作對(duì) 現(xiàn)在造成了影響和后果。
初二上冊(cè)英語(yǔ)二單元知識(shí)點(diǎn)篇二
5.一般過(guò)去時(shí)的時(shí)間狀語(yǔ)：yesterday, just now, …ago, last week, 2 years ago,in 1980等。
例：
We planted (plant) some flowers in the garden last week.
I have sent (send) the letter.
He has come (come ) back home, he is watching (watch) TV now.
David finished (finish) his homework just now.
The monkeys are full, because we have fed (feed) them.
A: I have lost (lose) my purse!
B. Bad luck! When did you lose (lose) it?
A: I lost (lose) it last night.
與現(xiàn)在完成時(shí)連用的幾個(gè)副詞：already, just, ever, yet, never
肯定句: already, just
疑問(wèn)句和否定句: ever, yet, never
yet 常置于句末
already, never, ever just一般置于助動(dòng)詞have/has之后，過(guò)去分詞之前.
例：用 already, just或never, yet完成句子
1) I have been to many big cities, but I have never been to Shanghai.
2) Most of us have already finished our compositions.
3) Have they taken down the old pictures yet ? No, not yet .
4) He has already visited Beijing twice.
5) I have just heard the news. I know it.
7. 現(xiàn)在完成時(shí)中的for和since
(1)for + 一段時(shí)間(用How long提問(wèn))
We have known each other for ten years. 我們相識(shí)10年了。
(2)since + 句子/具體時(shí)間
since 引導(dǎo)的短語(yǔ)或從句用How long提問(wèn)
①since+過(guò)去一個(gè)時(shí)間點(diǎn)(具體的年、月、日、鐘點(diǎn)等)。
Tom has eaten nothing since yesterday.
?、趕ince + 一段時(shí)間+ago
We have been friends since five months ago. 從5個(gè)月前起，我們就成了朋友。
③since+從句，表示“自過(guò)去某個(gè)時(shí)間、某件事情以來(lái)”，從句時(shí)態(tài)：一般過(guò)去時(shí)。
I have lived here since I left
t Shanghai.
?、躀t is+一段時(shí)間+since從句，表示“自從某件事發(fā)生已有一段時(shí)間了”。
It is two years since I left school.
8. 在含for或since引導(dǎo)的時(shí)間狀語(yǔ)的現(xiàn)在完成時(shí)中，謂語(yǔ)動(dòng)詞只能用延續(xù)性動(dòng)詞。非延續(xù)性動(dòng)詞不能直接和for或since 連用。
leave --- be away die --- be dead
begin/start --- be on finish --- be over
come here --- be here go there --- be there
come back --- be back fall asleep --- be asleep
get to/ arrive/reach --- be (in) leave --- be away from
go (get) out --- be out open sth --- keep sth open
join --- be in+組織機(jī)構(gòu)/be a member of+組織機(jī)構(gòu)
fall ill --- be ill get up --- be up
catch a cold --- have a cold borrow --- keep
buy --- have get to know --- know
put on---wear
例：
1. The old man died 4 years ago.
The old man has been dead for 4 years.
2. It is 4 years since the old man died.
Four years has passed since the old man died.
3. He joined the Party 2 years ago.
He has been in the Party for 2 years.
4. I bought the book 5 days ago.
I have had the book for 5 days.
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