中考網(wǎng)整理了關(guān)于中考復(fù)習(xí)知識(shí)點(diǎn)之時(shí)間狀語從句，希望對(duì)同學(xué)們有所幫助，僅供參考。
時(shí)間狀語從句
(1) 時(shí)間狀語從句常用when， as， while， before， after， since， till， until，as soon as等連詞來引導(dǎo)。
例如：
It was raining hard （rain hard下大雨)when I got to school yesterday.
While he was doing his homework， the telephone rang.
As she walked along（沿著走)the lake， he sang happily.
He had learned a little Chinese before he came to China.
After he finished middle school， he went to work in a factory.
(2)在時(shí)間狀語從句里，通常不用將來時(shí)態(tài)，用現(xiàn)在時(shí)態(tài)表示將來的動(dòng)作或狀態(tài)。例如：
I'll ring you up as soon as I get to NewYork.
I will tell him everything when he comes back.
He won't believe it until he sees it with his own eyes.
(3) 在帶有till或until引導(dǎo)的時(shí)間狀語從句的主從復(fù)合句里， 如果主句用肯定式， 其含義是“一直到......時(shí)，謂語動(dòng)詞只能用延續(xù)性動(dòng)詞。如果主句用否定式，其含義是“直到......才.......”“在......以前不......”，謂語動(dòng)詞可用瞬間動(dòng)詞。例如：
The young man read till the light went out （熄滅) .
Let's wait until the rain stops.
We won't start until Bob comes.
Don 't get off(從下來) until the bus stops.
【till是指直到某一特定事件發(fā)生的時(shí)候,而在那個(gè)時(shí)刻之后,該事情或狀況仍將持續(xù)。Until是指直到某一特定事件發(fā)生的時(shí)候,而講話的人在自己心里認(rèn)為,在那個(gè)時(shí)刻之后,該事情或該狀況將中止(不怎么可能持續(xù))。固定組合里 from moming till night中, till/until是不能替換的.】
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