while conj.当……时候,指一段时间,不能用来表示一个时间点,因此句子中的谓语应是延续性动词。
She promised to take care of my children while I was away.
他答应我不在时会照顾我的孩子的。
Mother listened closely while I read the letter.
我读信时,妈妈听得很仔细。
While the discussion was still going on,George came in.
当讨论还在进行时,乔治走了进来。
●用法拓展
while还可表示对比或转折,意为“而;然而”,也可引导让步状语从句,意为“虽然;尽管”。
There're plenty of rain in the southeast,while there's little in the northeast.
东南部雨量充足,而东北部则很少下雨。
While I admit his good points,I can see his shortcomings.
尽管我承认他的优点,但我还是能看到他的缺点。即境活用单项填空
①I was doing my homework________my brother was playing piano in his room.
A.since
B.while
C.unless
D.until
②—Will you buy the hat?
—No.________I like the color of the hat,I do not like its shape.
A.When
B.Since
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