Itwasthirtyyearshewasinvitedasanoutstandingalumnustocelebratethe28thanniversaryoftheuniversity.A.asB.whileC.beforeD.until求知道正确答案以及选此选项的理由还有其余三个选项的用法

Question

It was thirty years __ he was invited as an outstanding alumnus to celebrate the 28th anniversary of the university.
A.as B.while C.before D.until
求知道正确答案以及选此选项的理由
还有其余三个选项的用法

Answer 1

It is…before…是个固定句型.该句型的is/was后可接long或一段时间.肯定句译为“过多久…才…”；否定句译为“没多久…就…”.例如：
It was a long time before I got to sleep again.
It will be hours before he arrives here.
It was not long before he left his home town.
It will be five years before we meet again.
It wasn’t long before he told us about this affair.
It was evening before we reached the little town.
这类句型一般译成“过……才……”或“不久……就……”,需注意的是前后的时态要相互照应.