关于英语中的when和while,( C )How can you expect your children to be truthful ____ you yourself tell lies?A.but B.while C.when D.until为什么不能选B?

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关于英语中的when和while,( C )How can you expect your children to be truthful ____ you yourself tell lies?A.but B.while C.when D.until为什么不能选B?
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关于英语中的when和while,( C )How can you expect your children to be truthful ____ you yourself tell lies?A.but B.while C.when D.until为什么不能选B?
关于英语中的when和while,
( C )How can you expect your children to be truthful ____ you yourself tell lies?
A.but B.while C.when D.until
为什么不能选B?

关于英语中的when和while,( C )How can you expect your children to be truthful ____ you yourself tell lies?A.but B.while C.when D.until为什么不能选B?
while后面加的是be doing的结构,或者是be+介词的结构
这是while的语法规则

while后跟进行时

while 后面一半跟doing,如果是telling lies,你就可以选B

while后面句中的谓语动词要是连续性动词
when后面句中的谓语动词可以是瞬间性动词或连续性动词