问题 选择题

In hot summer, milk quickly turns sour       it is refrigerated.

A.while

B.if

C.until

D.unless

答案

答案:D

题目分析:考查连词,A. while当…时候B. if如果C. until直到…D. unless除非,引导条件状语从句,句子意思“在炎热的夏季,牛奶很快变酸除非被冷藏”

点评:连词是高考常考内容,判断从句中用哪个连词,需要记住连词的用法,需要考生平时多练习,本题主要考查unless的用法,要求考生掌握好它的用法

即学即练:It will be quite a long time _______ she is back again, so don’t be too cross with her.

A. before                   B. since                C.that          D. until

选A

填空题
名词解释