I don't know how to start 这句话对吗?什么时候how to v.+it(动词后要加it)?

问题描述:

I don't know how to start 这句话对吗?什么时候how to v.+it(动词后要加it)?

错的,how to +do sth what不需要 what to+sth怎么改??在后面加一件事,比如:how to start fishing