While用法:
一、while作名詞用,表示“一會兒”“一段時(shí)間”。
She likes to lie down for a while after lunch. 她喜歡午飯后躺一會兒。
二、While作連詞
1、引導(dǎo)時(shí)間狀語。
We must strike while the iron is hot.趁熱打鐵。
2、引起讓步狀語從句,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,可是他對他們很嚴(yán)格。
3、引起條件狀語,意思是“只要”。
While there is life there is hope.只要生命存在,就有希望。