初中英語狀語從句知識(shí)點(diǎn)
初中英語狀語從句知識(shí)點(diǎn)
狀語從句指句子用作狀語時(shí)，起副詞作用的句子。接下來學(xué)習(xí)啦小編為你整理了初中英語狀語從句知識(shí)點(diǎn)，一起來看看吧。
初中英語狀語從句知識(shí)點(diǎn)：時(shí)間狀語
要點(diǎn): 時(shí)間狀語從句，由以下連詞引導(dǎo)：
when while as after before as soon as since till /until by the time 在時(shí)間狀語從句中，要注意時(shí)態(tài)一致。一般情況下主句是將來時(shí)的時(shí)候，從句要用一般現(xiàn)在時(shí)。
1.when當(dāng)...的時(shí)候
Mozart started writing music when he was four years old.
(當(dāng))莫扎特的時(shí)候，開始寫音樂作品。
2.while當(dāng)...時(shí)
He visited a lot of places while he was traveling.
他在旅途中參觀了許多地方。
3.as在...的同時(shí);一邊...一邊...
He smiled as he stood up.
他一邊站起來一邊笑著。
4.after在...之后
He left the classroom after he had finished his homework the other day.
前幾天做完作業(yè)之后回的家。
5.before 在...之前
Mr. Brown had worked in a bank for a year before he came here.
布朗先生來這之前已經(jīng)在一家銀行里工作一年了。
6.as soon as 一...就...
We began to work as soon as we got there.
我們一到那就開始工作。
I will write to you as soon as I get home.
我一到家就給你寫信。
7.since 自...以來 到現(xiàn)在
表示自過去的一個(gè)起點(diǎn)時(shí)間到目前(說話時(shí)間)為止的一段持續(xù)時(shí)間。主句一般用現(xiàn)在完成時(shí)，從句用一般過去時(shí)。
Mr Green has taught in that school since he came to China three years ago.
自格林先生來中國以來，他就在這所學(xué)校教書。
(還可以用作介詞，本句從句還可以用短語：since three years ago(自三年前以來)表示。)
8 till /until
都可以作連詞，連接時(shí)間狀語，也可以作介詞，與其它詞構(gòu)成介詞短語，在句中作狀語。
They walked till /until it was dark.
他們一直走到天黑。
Xiao Ming didn’t leave home till / until his father came back.
小明直到他爸爸回來才離開家。
9. by the time 到...為止 (所在句子的主句應(yīng)用完成時(shí))
By the time he gets there , his father has already gone.
他到家的時(shí)候，他爸爸已經(jīng)走了。
By the time I got to school, the class had already began.
我到校時(shí)，已經(jīng)開始上課了。
難點(diǎn)――as when while的辨析
as when while都表示主、從句動(dòng)作同時(shí)發(fā)生，三者差異如下：
表示“一邊...一邊"的意思
as 強(qiáng)調(diào)兩個(gè)動(dòng)作同時(shí)進(jìn)行，并表示對比時(shí)
用于發(fā)生時(shí)間較段時(shí)
when 1、還可以表示從句動(dòng)詞的動(dòng)作在主幾句動(dòng)詞的動(dòng)作"之前 "或"之后"發(fā)生。
2、when=and then; at that moment (正在那個(gè)時(shí)候)
while 1、用于時(shí)間較長時(shí)
2、 強(qiáng)調(diào)兩個(gè)動(dòng)作同時(shí)進(jìn)行，并表示對比時(shí)
有時(shí)這三個(gè)連詞可以互換，有時(shí)不可以。
lIt was raining hard when (as) I got there.
我到那里時(shí)，正在下大雨。 ( 動(dòng)作同時(shí)發(fā)生，when可換為as, 但不能換為while，因?yàn)間et是點(diǎn)動(dòng)詞.)
lWhen I had read the article, he called me.
我看完這篇文章之后，她給我打了電話。( 從句動(dòng)作發(fā)生在主句之前，注意時(shí)態(tài)表達(dá)，只能用when )
lWhen I got to the cinema, the film had begun.
(當(dāng))我到了電影院時(shí)，電影已經(jīng)開演了。(從句的動(dòng)作發(fā)生在主句之后，只能用when,并要注意時(shí)態(tài))
lHe was about to leave, when the telephone rang.
他正要離開，忽然電話響了。( 此時(shí)不能放在句首。主句動(dòng)詞一般表達(dá) “正在” “即將”while, as不能代替 ) 考點(diǎn)
She thought I was talking about her daughter, while, in fact, I was talking about my daughter.
他以為我在談她女兒，然而，實(shí)際上在談?wù)撐遗畠骸?表轉(zhuǎn)折，對比，when, as都不能代替它) 考點(diǎn)
While the alien was buying a souvenir, the girl called the police.
外星人買紀(jì)念品時(shí)，那女孩給警察打了電話。(表示主句，從句的動(dòng)作同時(shí)發(fā)生，while后引導(dǎo)的狀語從句的動(dòng)詞必須是延續(xù)動(dòng)詞不能是點(diǎn)動(dòng)詞，因?yàn)樗硎据^長時(shí)間)考點(diǎn)
Mother was worried because little Alice was ill, especially as (when/ while) father was away.
媽媽擔(dān)心，因?yàn)樾埯惤z病了，特別是他父親不在家的時(shí)候。(此時(shí)as ,when, while可通用)
知識(shí)擴(kuò)展
1. It is since從。。。以來多長時(shí)間了(因?yàn)閟ince +從句或名詞，表示一段時(shí)間)
It is five years since we met last time.從我們上次見面已經(jīng)五年了。
2. It is +before…(...才)
It was a long time before I went to sleep again.
過了很長時(shí)間我才睡著。
It was an hour before(=until) the police arrived.
過了一個(gè)小時(shí)，警察才來。
初中英語狀語從句知識(shí)點(diǎn)：地點(diǎn)狀語
要點(diǎn): 由連詞where和復(fù)合關(guān)系詞wherever (=no matter where )引導(dǎo).
知識(shí)擴(kuò)展
1.Where there is a will , there is a way.
有志者事竟成。(諺語)
1.It will be mixed school where not all the children are disabled.
他將是一所混合式學(xué)校，那里的兒童并不都是殘疾。(在限定性定語從句中對限先行詞起限定作用。)
2.Wherever you go , I go too.
無論你到什么地方，我都去。(wherever=no matter where)無論何處，多用于句首。
3.Wherever there is smoke , there is fire.
無風(fēng)不起浪。(諺語)
4. While she was wondering where to go , she met a policeman.
疑問副詞where后跟不定式,構(gòu)成不定式短語.
初中英語狀語從句知識(shí)點(diǎn)：原因狀語
要點(diǎn)：由連詞because，since，as引導(dǎo)，也可由for，now that 等詞引導(dǎo)
1.I didn't go to school yesterday because I was ill.
我昨天沒去上學(xué)，因?yàn)槲疑×恕?/p>
2. Since everybody is here，let's begin our meeting.
既然大家都來了，讓我們開始開會(huì)吧。
3. As you are in poor health，you should not stay up late.
既然你身體不好，你就不該熬夜。
4.I asked her to stay to tea，for I had something to tell her.
我請她留下來喝茶，因?yàn)槲矣惺乱嬖V她。
難點(diǎn)――because，since，as，for辨析
在語氣上，because 最重，表示的是直接理由，回答why 時(shí)只能用它。其次是since，as，一般不表示原因，而是表明理由，進(jìn)一步說明。(譯為：由于，既然)。for 被認(rèn)為是復(fù)合句的并列連詞(常用于推斷)，表示理由。
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