题目内容
12.Should you have any trouble carrying out this plan,______ me at this number.( )A. | calling | B. | call | C. | to call | D. | called |
分析 执行这个计划时,如果你有什么麻烦,给我打这个电话.
解答 答案B.
"Should you have any trouble carrying out this plan"用的是带虚拟语气的条件句,而且省略了if.省略if后,should要前置(把should放到从句的主语之前),还原以后是"If you should have any trouble carrying out this plan".这里条件句里的should+动词原形,是用于对将来发生的情况的虚拟.但这里并不是像一般的虚拟语气的用法那样表示与过去、现在的情况相反或与将来应该出现的情况相反,而是表示一种将来的偶然性、可能性,也就是说,要是将来"你有什么问题",不是表示将来你不会遇到问题,而我假设你会遇到,而是表示这种问题是出于偶然性的、可能的.另外,通过分析句子成分可知:Should you have any trouble carrying out this plan做条件状语,而主句中缺谓语动词,那么可排除非谓语动词,A、C和D三项不正确;又因为祈使句指的是表示命令、请求、建议或劝告的句子,其主语you常省略,谓语动词用原形,所以B正确.故答案选B.
点评 考查祈使句.祈使句与条件状语从句连用时,条件状语从句可置于祈使句前或后.做题时要认真审题,认真分析句子结构,并根据上下文语境,作出正确判断.
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