We were going out for a Christmas meal together ____ the accident happened.A．unl

题型：不详难度：来源：

We were going out for a Christmas meal together ____ the accident happened.

A．unless

B．until

C．while

D．when

答案

解析

试题分析：考查引导词，unless意思“除非”，until意思“直到…才…”，when意思“当…时候”，后面跟短暂性动词或延续性动词；while意思“当…时候”，后只跟延续性动词，句子意思“当事故发生的时候我们吃完圣诞团圆饭正出来”
点评：引导词是常考内容，要知道它们的意思，它们的区别，遇到此类题时，就很容易做出选择

举一反三

I doubt ____________all the people invited will come to attend the ceremony in such bad weather.

A．whether

B．that

C．how

D．what

题型：不详难度：| 查看答案

Christina wasn’t saying anything, but the professor smiled at her _______she had done something very clever.

A．as if

B．now that

C．while

D．though

题型：不详难度：| 查看答案

We should consider the students’ request________ the school library should provide more books on popular science.

A．that

B．when

C．which

D．where

题型：不详难度：| 查看答案

Will you help him________ you see an old man in trouble ?

A．though

B．so

C．because

D．when

题型：不详难度：| 查看答案

We must never think that we are good at everything __________ others are good at nothing.

A．since

B．however

C．while

D．as

题型：不详难度：| 查看答案