1.She likes to lie down for a while after lunch.
2.Coming to another country to study requires a big adjustment and it takes a while to fit in.
1.While she was listening to the radio，she fell asleep.
2.We must strike while the iron is hot.趁热打铁。
1.While there is life there is hope.只要生命存在，就有希望。
2.While there is a way there is away.有志者事竟成。
(3)引起让步状语从句，意思是“虽然…但是….”、“尽管…但是…”(多放于句首)1.While he loves his students，he is very strict with them..承德癫痫早期如何治疗p>
2.While these experiments are interesting and useful，it is important to remember that they may not always tell us much.
1.Some people waste food while others haven't enough.
2.The son was having a good meal at home，while the parents were working in the fields.
3. I ought to have helped her，but I never could.
4.Honey is sweet，but the bee stings.
句型A：be about to do…when…正要做…这时(发生另一事)
1.We were about to set out when it began to rain.
2.He had hardly sat down when his mobile rang.
3.I was walking along the bank of the river when I fell into it.
1.He hurried home，looking behind as he went.
2.While his mother was cooking in the kitchen，the boy fell asleep in the chair.
■ 巩固练习： 一.改错
1.She is fat but I am thin.哪家医院癫痫科好
2.It was raining while we arrived.
3.She sang while he walked.
4.I don't know them well，while they are my neighbors.
1.She thought I was praising her child，_____，in fact，I was scolding him for his bad behaviors at school.
A.what B.while C.so that D.therefore
2.I do every single bit of housework ____ my husband Bob just does the dishes now and then.(2004全国卷II35)
A.while B.since C.when D.as
3.______ it is expected that students come university with the ability to take a good set of notes，this is not always the case.
A.When B.As C.For D.While
4.We were swimming in the lake ___ suddenly the storm started.
A.when B.while C.until D.before
5.---You se山东治疗癫痫病靠谱的医院怎么选em to have had that car for years.
---Yes，it's in good condition，but I should sell it ____ it still runs.
A.if B.before C.because D.while
4.While they are my neighbors，I don't know them well.主句和从句颠倒位置。