Question

The field research will take Luffy and Steven about two weeks; it will be a long time _______ we _______ again.

A．before; met

B．since; meet

C．before; meet

D．since; met

Answer 1

C

試題分析：句意：該領(lǐng)域的研究將用掉Luffy和Steven約兩個(gè)星期的時(shí)間；很長時(shí)間之后， 我們才能再次會(huì)面。1）It is a long time sine…表示自從.. 已經(jīng)很久了。主句多用一般現(xiàn)在時(shí)態(tài)，從句用過去時(shí)態(tài)。 從句的動(dòng)詞若為瞬間動(dòng)詞，時(shí)間從動(dòng)作的開始算起，從句的動(dòng)詞若為延續(xù)性動(dòng)詞，時(shí)間從動(dòng)作的結(jié)束算起。It is 3 years since he left Shanghai. =" It" is 3 years since he was in Shanghai.他離開上海已經(jīng)3年了。2）It will be long before…表示“很久以后將…”It will be long before the film is on。3）It won’t be long before … 表示“不久以后將…”It won’t be long before the film is on。故選C。
考點(diǎn): 考查狀語從句的用法。