It's impolite not being able to get to the appointed place on time.语法结构是怎样的

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It's impolite not being able to get to the appointed place on time.语法结构是怎样的
It's impolite not being able to get to the appointed place on time.语法结构是怎样的

It's impolite not being able to get to the appointed place on time.语法结构是怎样的
It:形式主语,代替后边的“not being able to get to the appointed place on time”
is:谓语
impolite:表语
not being able to get to the appointed place on time:真正主语
原句翻译:不能按时到达约定地点是很不礼貌的.

it形式主语,
be impolite系动词+表语
not being able to get to the appointed place on time真正主语
appointed定语
not being able to ...是动名词的否定式
不能及时到约定的地方是不礼貌的。

这句是it's + adj. + to do sth, 的结构;
It 形式主语
is 谓语
impolite 表语
not being able to get to the appointed place on time. 真正主语