Question

It’s ten years _____ we met each other last time.A.before B.

Answer 1

选B

上次我们见面到现在已经十年了.

首先 before （在...以前）不行,when（当...时）不行.

after引导的词组所表示的时间是纯系过去,并不延续到说话时,因此要和一般过去时连用.

例如：He went home after school.

after 也不行

since引导的词组所表示的时间一直延续到说话时为止,因而要与现在完成时连用.

例如：He has been there twice since 1982.I have done nothing since six o”clock.

选 since