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  • While的用法

    While的用法
    英語人氣:229 ℃時(shí)間:2020-05-07 12:53:40
    優(yōu)質(zhì)解答
    一、 while 用作名詞時(shí),意為“一段時(shí)間,一會(huì)兒”.例如:
    I stayed there for a short while.
    (我在那兒呆了一小會(huì)兒.)
    The postman came a short while ago.
    (郵遞員剛剛來過.)
    二、 while 用作連詞時(shí),有以下幾種含義:
    1. 意為“當(dāng)……時(shí)候,和……同時(shí)”,引導(dǎo)時(shí)間狀語從句.例如:
    While I was watching TV, the bell rang.
    (我看電視時(shí),鈴響了.)
    Meimei watched TV while she ate her supper.
    (梅梅邊吃晚飯邊看電視.)
    2. 意為“雖然,盡管”,引導(dǎo)讓步狀語從句.例如:
    While it was late, he went on working.
    (雖然很晚了,但他還在繼續(xù)工作.)
    While he is in poor health, he works hard.
    (雖然他身體不好,但他還是努力工作.)
    3. 連接兩個(gè)并列句子,表示“對(duì)比”關(guān)系.例如:
    He went out for a walk, while I stayed at home.
    (他出去散步了,而我卻呆在家里.)
    I like singing while she likes dancing.
    (我喜歡唱歌,而她喜歡跳舞.)
    You like sports, while I prefer music.
    (你喜歡體育,而我更喜歡音樂.)
    三、 while 引導(dǎo)狀語從句時(shí),應(yīng)注意以下幾點(diǎn):
    1. while 引導(dǎo)的時(shí)間狀語從句既可放在句首,也可放在句末;而 while 引導(dǎo)的讓步狀語從句一般放在句首,不放在句末.另外,也可以從意義上加以區(qū)分.例如:
    While he was tired, he went on working.
    (雖然他累了,但他還是繼續(xù)工作.)
    ( while 引導(dǎo)讓步狀語從句)
    While he was tired, he would have a rest.
    (他累了就休息一會(huì)兒.)
    ( while 引導(dǎo)時(shí)間狀語從句)
    2. while 引導(dǎo)讓步狀語從句時(shí),如果從句的主語和主句的主語相同,那么從句的主語和謂語動(dòng)詞 be 都可以省略.例如:
    While he was ill, he went there. (= While ill, he went there.)
    (雖然他有病,但他還是去那里了.)
    3. while 和 when 都可以引導(dǎo)時(shí)間狀語從句,但應(yīng)注意: while 引導(dǎo)的時(shí)間狀語從句中的謂語動(dòng)詞必須是延續(xù)性的動(dòng)詞;而 when 引導(dǎo)的時(shí)間狀語從句中的謂語動(dòng)詞既可以是延續(xù)性動(dòng)詞,也可以是非延續(xù)性動(dòng)詞.當(dāng)時(shí)間狀語從句中的謂語動(dòng)詞是延續(xù)性動(dòng)詞時(shí), while 和 when 可以互相替換.例如:
    While we were talking, the teacher came in.
    (我們正在談話時(shí),老師進(jìn)來了.)
    The bus had left when we arrived at the bus stop.
    (當(dāng)我們到達(dá)車站時(shí),公共汽車已經(jīng)開走了.)
    ( arrive 是非延續(xù)性動(dòng)詞,因此,此句中的 when 不能用 while 替換.)
    When / While we were having a meeting, our teacher came in.
    (我們正在開會(huì)時(shí),老師走了進(jìn)來.)
    ( have 是延續(xù)性動(dòng)詞,因此,句中的 when 可以用 while 替換.)
    4. while 引導(dǎo)的狀語從句還可以表示“某個(gè)動(dòng)作正在進(jìn)行的同時(shí),另一個(gè)動(dòng)作也在進(jìn)行之中”.例如:
    While the teacher was speaking, the students were listening.
    (老師講課時(shí),學(xué)生們?cè)诼?)
    While he was writing, I was reading.
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