题目内容

20.A small car is big enough for a family of three          you need more space for baggage.(  )
A.onceB.in caseC.ifD.unless

分析 一部小车对于三口之家已经足够大了,除非你需要更多的空间来放行李.

解答 答案D.once"一旦",引导时间状语从句;in case"万一",引导条件状语从句;if"如果",引导条件状语从句;unless"除非,如果不",在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用,引导条件状语从句.分析可知前后两句话之间是逻辑上的"条件"关系,可排除A.再根据句子所表达的意思"除非你需要更多的空间来放行李"可知B和C项句意不通顺,故答案选D.

点评 本题考查从属连词的用法.连词的用法辨析,要注意分析主从句之间的关系,再确定相应的连词,同时注意不同的连词的语义及用法区别.本题尤其要注意区分unless和if的用法.unless在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用.如:Unless I am mistaken,I've seen that man before.=If I am not mistaken,I've seen that man before.如果我没搞错,我以前见过那个人.

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1.A. impressive B. simple C. necessary D. slight

2.A. results B. ideas C. problems D. decisions

3.A. bought B. served C. offered D. taught

4.A. throughout B. of C. for D. into

5.A. work B. money C. time D. career

6.A. plan B. get C. move D. stay

7.A. never B. seldom C. still D. yet

8.A. excited B. careful C. determined D. patient

9.A. interesting B. easy C. possible D. important

10.A. shared B. combined C. remembered D. separated

11.A. watch B. improve C. raise D. play

12.A. reminded B. invited C. permitted D. challenged

13.A. words B. skills C. lessons D. stories

14.A. used B. read C. learned D. spelled

15.A. encouraged B. warned C. forced D. allowed

16.A. Therefore B. Besides C. However D. Otherwise

17.A. If B. Since C. Although D. Unless

18.A. imagined B. noticed C. realized D. dreamed

19.A. make a difference B. turn away C. show off D. make a mistake

20.A. ready B. thankful C. sorry D. anxious

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