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______ in the regulations is that you _____ other people the password of your e-mail account.
A.What is required; not tell B.As is required; shouldn’t tell
C.It is required; not tell D.It requires; shouldn’t tell
A

试题分析:考查主语从句和虚拟语气。本题第一空是what所引导的主语从句what is required in the regulation,what在句中做主语。因为第一空中有动词require,后面的从句要使用“should+动词原形”构成的虚拟语气,should可以省略。句意:在规则中北要求的是你不应该告诉别人你的邮箱的密码。故A正确。
点评:在复合句中做主语的从句叫做主语从句,它的位置与陈述句基本结构中的主语相同。引导主语从句的关联词有:连词:that, whether;连接代词:who, whom, whose, what, which;连接副词:when, where, why, how;复合词:whatever, whoever, whomever, when?蛳ever, wherever, whichever, however.解答这类题目,关键在于分析清楚句子结构。通过判断引导词在从句中所作的成分及意义,来选择正确的引导词。英语中有4——四个表示“要求”的词,require, ask ,tell, demand;3——三个表示“建议”的词,suggest, recommend, advice;2——两个表示“命令”的词,order,command ; 1——一个表示“坚持”的词,insist。他们后面接 should+动词原形 的虚拟语气。Should可以省略。
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