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中考英語(yǔ)知識(shí)點(diǎn)總結(jié)-文庫(kù)吧

2024-10-07 13:51 本頁(yè)面


【正文】 e 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(duì)比時(shí) 用于發(fā)生時(shí)間較段時(shí) when 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。 when= and then。 at that moment (正在那個(gè)時(shí)候 ) while 用于時(shí) 間較長(zhǎng)時(shí) 強(qiáng)調(diào)兩個(gè)動(dòng)作同時(shí)進(jìn)行,并表示對(duì)比時(shí) 有時(shí)這三個(gè)連詞可以互換,有時(shí)不可以。 It 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)?get 是點(diǎn)動(dòng)詞 .) When I had read the article, he called me. 我看完這篇文章之后,她給我打了電話(huà)。 ( 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 ) When 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(kāi)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) ) He was about to leave, when the telephone rang. 他正要離開(kāi),忽然電話(huà)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(duì)比, when, as 都不能代替它 ) 考點(diǎn) lWhile the alien was buying a souvenir, the girl called the police. 外星人買(mǎi)紀(jì)念品時(shí),那女孩給警察打了電話(huà)。 (表示主句,從句的動(dòng)作同時(shí)發(fā)生, while后引導(dǎo)的狀語(yǔ)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(zhǎng)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?ài)麗絲病了,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(lái)多長(zhǎng)時(shí)間了 (因?yàn)?since +從句或名詞,表示一段時(shí)間 ) It is five years since we met last 。 2. It is +before? (。才 ) It was a long time before I went to sleep again. 過(guò)了很長(zhǎng)時(shí)間我才睡著。 It was an hour before(= until) the police arrived. 過(guò)了一個(gè)小時(shí),警察才來(lái)。 二、條件狀語(yǔ)從句 要點(diǎn): 表示狀語(yǔ)從句由連詞 if, unless (=if not) 引導(dǎo)。 it doesn’ t rain tomorrow, we will go hiking. 如果明天不下雨 , 我們就去遠(yuǎn)足 . will get good grades if you study hard. 如果你努力學(xué)習(xí) ,就會(huì)取得好成績(jī) .
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