Isn't ( )rude( )him to talk to his mother like that.( ) A that,for B he,of C it,for D it,of这句话啥意思,根据什么来选,涉及哪些语法知识,

Isn't ( )rude( )him to talk to his mother like that.( ) A that,for B he,of C it,for D it,of这句话啥意思,根据什么来选,涉及哪些语法知识,
Isn't ( )rude( )him to talk to his mother like that.( ) A that,for B he,of C it,for D it,of
这句话啥意思,根据什么来选,涉及哪些语法知识,

Isn't ( )rude( )him to talk to his mother like that.( ) A that,for B he,of C it,for D it,of这句话啥意思,根据什么来选,涉及哪些语法知识,
选D
Isn't (--it -- )rude(--of-- )him to talk to his mother like that.
（句末应该是问号吧） 他（像）那样对他妈妈讲话难道不无礼吗?这是 一个反问句
分析：rude 意为粗鲁,无礼
一般来讲 it is +adj+for sb to do sth 长见,该句型中 it是形式主语,真正的主语是to后面的不定式,意为 做某事对某人来说是怎样的
但当这个形容词adj是形容人品等方面的,如rude,king等是for 就要改成of
句型是 it is +adj+of sb to do sth 翻译是一样的

选C 用到的句型是 it is +adj+for sb to do sth 这里it是形式主语，指代talk to his mother like that ， 为了避免句子的结构头重脚轻使句子平衡，就用it来指代。

D 他这样和他妈妈说话并不无理 it's rude of sb. to do sth. 的否定句。例句是否定前置形式。