while后面用ing形式嗎

while后的句子謂語動詞并不一定是ing形式，具體形式需要根據上下文內容和時態來判定。while后的句子時態可以是一般現在時態，也可以是過去時態、進行時態等。

while的具體用法如下：

一、while作名詞用，表示“一會兒”“一段時間”。

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

2.Coming to another country to study requires a big adjustment and it takes awhileto fit in.來到另一個國家求學，需要花一段時間來適應。

二、While作連詞。

1.引導時間狀語(從句動作必須是延續性的)。

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

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

2.引導讓步狀語從句，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.雖然他愛他的學生，可是他對他們很嚴格。

3.引導條件狀語,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”，表對比。而but表轉折，注意用心比較體會while與but的句中用意。

1.Some people waste food while others haven't enough.有些人很費糧食，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。