it is a waste of time doing还是to do为什么

2025-04-05 10:16:42

It is a waste of time to do something.

因为这是动词不定式的复合结构。

It&垆杪屑丝#39;s adj. for sb to do sth for sb to do sth是真正的主语,sb是to do sth的逻辑主语的。

如: It is impossible for him to get up early. It's important (for me) to carry on practicing speaking for learning English.

动词不定式的复合结构是“for / of sb. to do sth.”。

it is a waste of time doing还是to do为什么

扩展资料

不定式复合结构的介词用for还是of,主要决定于前面形容词的性质。

一般说来,of前面的形容词是careful, clever, foolish, good, kind, nice, wise等,说明人的特性。

for前面的形容词是dangerous, difficult, easy, hard, heavy, important, interesting, necessary等,一般说明不定式动作的特性.

前面如果是名词用for。如:

1.It’s a good idea for parents to allow children to study in groups during the evening.

对父母来说,在晚上让孩子分组学习是个好主意。

2.It’s wise of him to do it well.

对他来说,把这件事做好很明智。



声明:本网站引用、摘录或转载内容仅供网站访问者交流或参考,不代表本站立场,如存在版权或非法内容,请联系站长删除,联系邮箱:site.kefu@qq.com。
猜你喜欢