He didn’t go to bed until twelve o‘clock last night这句话中的didn't go为什么用didn't而不用肯定的词语,句子中didn't是否定的吗not.until是直到.

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He didn’t go to bed until twelve o‘clock last night这句话中的didn't go为什么用didn't而不用肯定的词语,句子中didn't是否定的吗not.until是直到.
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He didn’t go to bed until twelve o‘clock last night这句话中的didn't go为什么用didn't而不用肯定的词语,句子中didn't是否定的吗not.until是直到.
He didn’t go to bed until twelve o‘clock last night这句话中的didn't go为什么用didn't而不用肯定的词语,句子中didn't是否定的吗
not.until是直到.

He didn’t go to bed until twelve o‘clock last night这句话中的didn't go为什么用didn't而不用肯定的词语,句子中didn't是否定的吗not.until是直到.
He didn't go to bed until twelve o' clock last night.
Not until twelve did he go to bed last night.

是的，
He didn’t go to bed until twelve o‘clock last night.
你可以这么理解，
直到12点之前，他都不去睡觉，
until表达在某时间点之前一直保持某种状态，不论是否定状态还是肯定状态，
或者用unless，
He didn‘t go to bed unless twelve o‘clock las...

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是的，
He didn’t go to bed until twelve o‘clock last night.
你可以这么理解，
直到12点之前，他都不去睡觉，
until表达在某时间点之前一直保持某种状态，不论是否定状态还是肯定状态，
或者用unless，
He didn‘t go to bed unless twelve o‘clock last night.
这句话是，除非到12点，否则他不去睡觉。
这里强调没有达成某种条件，会导致的结果。

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