题目内容
20.He commanded that the students ______the classroom before he returned.( )A. | didn't leave | B. | wouldn't leave | C. | not leave | D. | couldn't leave |
分析 他命令在他回来前学生不允许离开教室.
解答 答案是C.本题考查command后接宾语从句中虚拟语气的用法;英语中表示"建议、要求、命令"的词与名词性从句连用,从句中的动词用"should+动词原形",should可以省略;command表示"命令",所以从句中动词应为"(should)not leave",故选C.
点评 在掌握虚拟语气的规则的基础上,判断题干属于什么类型的虚拟,然后根据语境,选用恰当的动词形式表达虚拟.

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