Question

有关英语改错的问题。

Market research agencies frequently organise training,where trainees learn how to recognise socio-economic groups and practise approaching to the public.
这里的to 是不需要的，但是我不懂原因，approach有approach to的用法。求解

Answer 1

根据句子结构可以判断这里的approaching是approach的动名词形式。
approach是及物动词，后面跟宾语的话不需要介词，所以去掉to。
在approach是名词的时候，后面才需要加介词再加宾语。
例如：
I don't like the approach to solving the problem.

Answer 2

ody grows old merely by a number of years. We grow old by deserting our ideals.