while后面用ing形式嗎

while后的句子謂語動(dòng)詞并不一定是ing形式，具體形式需要根據(jù)上下文內(nèi)容和時(shí)態(tài)來判定。while后的句子時(shí)態(tài)可以是一般現(xiàn)在時(shí)態(tài)，也可以是過去時(shí)態(tài)、進(jìn)行時(shí)態(tài)等。

while的具體用法如下：

一、while作名詞用，表示“一會(huì)兒”“一段時(shí)間”。

1.She likes to lie down for a while after lunch.她喜歡午飯后躺一會(huì)兒。

2.Coming to another country to study requires a big adjustment and it takes awhileto fit in.來到另一個(gè)國(guó)家求學(xué)，需要花一段時(shí)間來適應(yīng)。

二、While作連詞。

1.引導(dǎo)時(shí)間狀語(從句動(dòng)作必須是延續(xù)性的)。

(1)We must strike while the iron is hot.趁熱打鐵。

(2)While she was listening to the radio,she fell asleep.她聽著收音機(jī)睡著了。

2.引導(dǎo)讓步狀語從句，意思是“雖然…但是…”、“盡管…但是…”(多放于句首)。

While he loves his students，he is very strict with them.雖然他愛他的學(xué)生，可是他對(duì)他們很嚴(yán)格。

3.引導(dǎo)條件狀語,意思是“只要，如果”。

(1)While there is life there is hope.只要生命存在,就有希望。

(2)While there is away there is away.有志者事竟成。

三、While作并列連詞，意思為“而,然而”，表對(duì)比。而but表轉(zhuǎn)折，注意用心比較體會(huì)while與but的句中用意。

1.Some people waste food while others haven't enough.有些人很費(fèi)糧食，然而有些人卻吃不飽。

2.The son was having a good meal at home，while the parents were working in the fields.兒子在家吃好飯而父母卻在田里辛勤勞作。

3.I ought to have helped her，but I never could.我本該幫她但沒能。

4.Honey is sweet，but the bee stings.蜂蜜很甜，但蜜蜂有刺蜇人。