I’m sorry you’ve been waiting for so long, but it’ll still be some time _______

题型：不详难度：来源：

I’m sorry you’ve been waiting for so long, but it’ll still be some time _______ Brian gets back.

A．since

B．after

C．when

D．before

答案

解析

试题分析：A. since 自从B. after在…之后 C. when当...时候 D. before在…之前；句意：我很抱歉你等了这么长时间，但是在布莱恩先生回来之前还要一段时间。本题中it作为形式主语，before所引导的时间状语从句作为真正的主语，故选D
点评：连词在高考中涉及到的很多，尤其在宾语从句、状语从句、定语从句中连词是必考点。平时学习过程中，掌握连词的意思，及所表示的关系是至关重要的，这种关系的判断可以通过句子意思的理解来选择恰到的连词。

举一反三

_______ all of them are strong candidates, only one will be chosen for the post.

A．Since

B．If

C．As

D．While

题型：不详难度：| 查看答案

–Would you like to spend the vacation in Paris with me?
--I’d like to______ you pay for me.

A．unless

B．provide

C．although

D．provided that

题型：不详难度：| 查看答案

I"m not mistaken, Rio de Janeiro of Brazil was chosen as the host city for the 2016 Olympics.

A．If

B．As

C．Unless

D．Though

题型：不详难度：| 查看答案

_____ you have worked out the first problem, you may go on to work on the second.

A．Even if

B．Unless

C．Now that

D．Though

题型：不详难度：| 查看答案

I earn 50 dollars a week, _______ she earns 80 dollars.

A．as

B．when

C．while

D．since

题型：不详难度：| 查看答案