while用法小結(jié)

1、【精品文檔】如有侵權(quán)，請聯(lián)系網(wǎng)站刪除，僅供學(xué)習(xí)與交流while用法小結(jié).精品文檔.while用法小結(jié) (1)引導(dǎo)時間狀語從句,從句中的謂語動詞應(yīng)用延續(xù)性動詞或表示狀態(tài)的詞。eg.While the discussion was still going on,George came in.當討論還在進行時,喬治走了進來。Strike while the iron is hot.趁熱打鐵。注意:while,when,as表“當?shù)臅r候”的區(qū)別while強調(diào)同時性或某時間段內(nèi)一種情況發(fā)生時另一種情況出現(xiàn),與延續(xù)性動詞連用;when可與延續(xù)或非延續(xù)性動詞連用,在強調(diào)“當時”,“這時”之意時when;as

2、強調(diào)同時性,指“一邊一邊”一件事情發(fā)生,另一件事情立刻發(fā)生。eg.Im going to the post office. _youre there,can you get me some stamps? A.As B.While C.Because D.If解析:從該題的題意可以看出C、D兩選項不合題意；而as側(cè)重同時性,不合題意;while可指一時間段發(fā)生某情況時,另一情況出現(xiàn),正合題意。(2)引導(dǎo)讓步狀語從句,多用于句首。意為“盡管,雖然”。eg.While I admit his good points ,I can see his bad.盡管我承認他的長處,但我也看到了他的不足。W

3、hile he loves his students,he is very strict with them.雖然他愛他的學(xué)生,可是他對他們很嚴格。(3)While作并列連詞用,意思為“而,然而”,表前后意義上的對比或轉(zhuǎn)折。eg.Theres plenty of rain in the southeast,while there's little in the northeast.東南部雨量充足,而西北部則很少下雨。Some people waste food while others haven't enough.有些人浪費糧食,然而有些人卻吃不飽。egShe thought

4、 I was talking about her daughter,_,in fact,I was talking about my daughter.A.whom B.where C.which D.while解析:句意為“她認為我在談她女兒,而實際上我在談我的女兒?！眞hom,which和where分別是引導(dǎo)定語從句的關(guān)系代詞和關(guān)系副詞,后一句并非修飾定語從句,故應(yīng)排除A、B和C選項。注意:while與but的區(qū)別二者都有“而,然而”之意,但while強調(diào)二者的對比,而but強調(diào)前后的轉(zhuǎn)折關(guān)系。(4)引導(dǎo)條件狀語,意思是“只要”eg.While there is a will,there

5、is a way.有志者事竟成。We can surely overcome these difficulties while we are closely united.只要我們緊密地團結(jié)一致,一定能克服這些困難。(5)while從句中的省略。當while從句中的主語與主句的主語一致,且含有be的某種形式時,從句中的主語連同be可同時省略。eg.While listening to the radio,she fell asleep.她在聽收音機時睡著了。While in London,he studied music and painting.在倫敦時,他學(xué)習(xí)音樂和繪畫。(6)while可用作名詞,意為“一會兒;一段時間” 作名詞用時,主要用于短語中:after a while“過了一會兒”;all the while“一直,始終”;a short/little while ago“剛才”;once in a while“偶爾、間或”;wait/rest(for)a while“等/休息一會兒”。I havent seen her for a long while.我好久沒有看見她了。He usually goes to work by bike,but once in a while he goes by