until和not until有什么区别

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until和not until有什么区别
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until和not until有什么区别
until和not until有什么区别

until和not until有什么区别
until 往往跟not连用.如:
He didn't get up until 9:00.他起到九点钟才起床.
She didn't finish her homework until the teacher came in.起到老师进来,她才做完家庭作业
如果要强调until引导的时间状语,则可以将 not 和until提前.这时句子要半倒装.如:
Not until 9:00 did he get up.
Not until the teacher came in did she finish her homework.
until的用法与汉语不同.如第一例,汉语是说九点以后的事,他九点钟以后才起床.而英语是说九点钟以前的事,他九点钟以前一直不起床,这种状态一直持续到九点钟才得以改变.
until有时也可以不跟not 连用.请看下例:
He lay in bed until 9:00.他在床上一直躺到九点钟.

not until直到……才
until 直到……还