请问这句话错在?lf this happens to you often,we encourage you talk about it with their parents.

talk前加to 记住 encourage sb. to do sth. 这个事特定句型

encourage 和 talk 是两个动词，若要连用时，应该在他们之间加to

talk前加个to

encourage you to talk about
貌似少了一个to吧。。。

lf this happens to you often,we encourage you (to) talk about it with their parents.
encourage sb.to do sth.

这句子我重写吧
If this often happens to you, we encourage you to talk about it with your parents.
1、often的位置有点怪异，但是从语法角度讲，不错呢，每个人喜欢把他放在不同的地方。
2、encourage sb to do sth
3、后半句中的 you 与 their 搭配不一致

...encourage you to talk...