I won’t call you, ________ something unexpected happens. A．unlessB．whetherC．bec
题型：不详难度：来源：
I won’t call you, ________ something unexpected happens. | A．unless | B．whether | C．because | D．while |
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答案
| A |
解析
| unless引导条件状语从句,意为“除非”,表示“我不会给你打电话，除非出乎意料的事发生”。whether引导让步状语从句或名词性从句,意为“无论是否”或“是否”。because引导原因状语从句,意为“因为”。while引导时间状语从句,意为“当……的时候”，也可引导并列句,意为“而”。 |
举一反三
_____he had not hurt his leg, John would have won the race.| A．If | B．Since | C．Though | D．When |
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—Where’s that report?
—I brought it to you ____you were in Mr. Black’s office yesterday. | A．if | B．when | C．because | D．before |
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It is difficult for us to learn a lesson in life _____we’ve actually had that lesson. | A．until | B．after | C．since | D．when |
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My parents live in a small village. They always keep candles in the house ___ there is a power cut.| A．if | B．unless | C．in case | D．so that |
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The field research will take Joan and Paul about five months;it will be a long time_____we meet them again.| A．after | B．before | C．since | D．when |
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