It +be (not) + 时间段 +before 从句

It +be ( not ) + 时间段 +before 从句:


  1. It was not long before the whole country rose and drove the Austrian soldiers from their homeland. 不久,全国人民便奋起反抗,把奥地利军队从他们的国土上赶了出去。
  2. It may be five or six years before the new medicine is tested on human beings.


  1. It was two months before he designed the bridge.  过了两个月,他设计出了这座桥梁。

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