______the rain stops before 12 o’clock, we will have to cancel the game.A、AsB、S

游客2023-10-07  24

问题 ______the rain stops before 12 o’clock, we will have to cancel the game.

选项 A、As
B、Since
C、While
D、Unless

答案 D

解析 本题译文:除非12点之前雨停了,否则我们将不得不取消比赛。
本题考查连词辨析。as可以引导原因状语从句,还可以引导时间状语从句,常表示“随着……”;“一边……,一边……”之意。I saw him as he was getting off the bus.正当他下公共汽车时,我看见了他。since引导时间状语从句“自从……”while引导时间状语从句,常表示“当……的时候”,例如:While she was making a phone call,I was writing a letter.当她在打电话时,我正在写信。unless引导条件状语从句,相当于if…not…“除非……,否则……”例如:One can’t learn a foreign language well unless he studies hard.除非刻苦学习,否则学不好外语。因此,选项D为正确答案。
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