请问it be…before…的句型用法…比如说it was 3 years before he …

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推荐答案 2011-05-11

It was/will be+时间段+before... 过了…才…
eg:It was three years before he finished the work.他花了三年才完成这项工作.
It will be three years before he finishes the work.他得花三年才能完成这项工作.

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It be+ ... since/before/when 分别在哪些情况下用?答：1.It was/will be+时间段+before... 过了…才…eg:It was three years before he finished the work.他花了三年才完成这项工作.It will be three years before he finishes the work.他得花三年才能完成这项工作.2.It won't be/take long before...不久就会…eg:It won't be long bef...

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