Question

高中英语改错题(高手进！)

有一片高中英语改错其中一段是这样的，They argue that it does no good to help people communicate,答案是把help改成helping,但是我认为没错啊！如果看成动名词作主语也是it is no good to doing sth ,而本句是it does ,应该是不定式作主语的固定结构，请高手帮我分析一下！谢谢！

Answer 1

do good to 是个固定用法。后面可以跟人、名字或动名词,对。。。有利，有好处
例如， It does good to you.
Practice does good to your health.
do no good to sth. or sb.就是对。。。没好处

Answer 2

it is no use doing sth.

do good to sth/doing sth.
这里的to不是不定式，后面接名词性成分

Answer 3

把communicate改成communicating
no good to help或 no good helping 均可，no good to do sth 或是no good doing sth
而help sb要么to do sth，要么help sb doing