Use of 曾经

我小的时候，曾经每个星期三都和我的妹妹学过骑马，可是我16岁了以后，不曾还学骑马就不去学骑马了，因为我比较喜欢做别的运动。
我曾经（right~）在中国去过很多的地方，可是还没有去过九寨沟，我要去，因为我听说很美丽的。

1."曾经"means that...u have done that thing just once or several times before, like what u say in the second setence"我曾经去过中国"

2.if u used to do one thing, but u don't do it any more, u can use "曾经"

but in the first setence, there is already "我小的时候 when i was young', it's unnecessary to add"曾经', because "我小的时候" is already a specific time, while "曾经' is a vague statement about the past.

u can say"我小的时候，每个星期三都去骑马"or“我曾经每个星期三都去骑马”

Hope this can help u.

C.

meicuo没错=that's right，it expresses an agreemenent with someone Ex:“Chinese will eat rice dumplings on the Dragon Boat Festival. （中国人会在端午节吃粽子）” “meicuo没错, rice dumpling is a traditional food for this festival” Whether asking a question or just stating a fact, u can reply "meicuo" For what u asked above——"Did I hear it correctly ? Is this the correct word, and is it a common saying?", I can also reply"meicuo没错" Besides, we also say"dui 对""shi de 是的"instead

meicuo没错=that's right，it expresses an agreemenent with someone Ex:“Chinese will eat rice dumplings on the Dragon Boat Festival. （中国人会在端午节吃粽子）” “meicuo没错, rice dumpling is a traditional food for this festival” Whether asking a question or just stating a fact, u can reply "meicuo" For what u asked above——"Did I hear it correctly ? Is this the correct word, and is it a common saying?", I can also reply"meicuo没错" Besides, we also say"dui 对""shi de 是的"instead