The traffic rule says young children under the age of 4 and

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/26 02:40:27

The traffic rule says young children under the age of 4 and _____ less than 4 pounds must be in a child safety seat .
A.being weighted
B.to weigh
C.weighed
D.weighting
为啥不是被动呢被称啊

答案：D.
翻译：交通规则注明：四岁以下和体重低于4磅的幼儿必须呆在儿童安全座位.
1.分析句子结构,其主干为：The traffic says young children must be in a child safety seat.
而under the age of 4 and ____ less than 4 pounds为两个用and并列连接的后置定语,修饰宾语从句的主语young children.
2.此时需要考查从句主语young children和非谓语动词weigh之间的关系为主动还是被动,以对应使用现在分词或过去分词做后置定语.
weigh可做及物动词,意思是“称...的重量”；
也可以做不及物动词,意思是“重达”,后面一般接名词性短语“基数词 + 重量单位（复数）”做状语而不是宾语,且此时不能用于被动语态.
根据题意,明显不是指“被称重”,而是指“重达”,所以young children和weigh之间只能是主动关系,所以选用现在分词形式weighing做后置定语.
即正确答案为D.
3.weigh此种用法是固定的,希望楼主能记住,以避免以后再犯类似错误.
A表被动和进行,排除；
B表示weigh动作尚未发生,排除；
C表示被动,排除.

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