题目内容
2.Keep quiet,please!You must know talking loudlyis not allowed (not allow) in the reading room.分析 请安静!你们必须知道在阅览室不允许大声喧哗.
解答 答案:is not allowed
根据宾语从句的主语"talking loudly"是谓语动词allow的承受者,二者是被动关系,故用被动语态,根据主句中的情态动词must指现在的情况,可知从句要用一般现在时态,结合括号里提示词not可知谓语动词要用一般现在时的被动语态的否定形式,其结构为is/am/are+not+及物动词的过去分词,又根据动名词作主语为单数,故用is,故填is not allowed
点评 本题主要考查完成句子,首先要根据所给单词提示,然后根据句式特点,结合句意和词性,确定单词的适当形式,最后把句子补充完整,本题考查一般现在时的被动语态的否定形式.
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