1.Please let us to know if it's best to go there by train.

问题描述:

1.Please let us to know if it's best to go there by train.
2.It's too hot.Would you mind to open the window?
这两句话错在哪儿?

let 是使役动词,后面跟to do不定式做宾语补足语时候应该省略不定式的符合to,
mind“介意”后面跟doing动名词做宾语
这是固定不变的,需要牢记