属于那种从句类型educational television has no commercials that many parents approve of.that many parents approve of.是什么从句,如果是非限定性定语从句,为什么that前没“,”.

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/16 08:47:36

属于那种从句类型
educational television has no commercials that many parents approve of.
that many parents approve of.是什么从句,如果是非限定性定语从句,为什么that前没“,”.

that引导的是定语从句,因为that不可以引导非限制性定于从句,所以本句是限制性定语从句,并且that在定语从句中做of的宾语.(that many parents approve of)是定语从句,先行词是commercials,也就是说(that many parents approve of)是整个句子修饰commercials,定语从句的主语是parents,谓语是approve of,所以从句中没有宾语,用that 来引导从句,并充当从句的宾语.

非限制性定语从句一定有逗号,但不能用that,如果修饰物用which,修饰人用who/whom。这里既没逗号又是that,所以不是非限制性定语从句,是限制性定语从句。

that 前面本来就没有逗号。。。。
是定语从句。。。如果用which 前面有逗号。。。