妈妈的话总是那么有道理

Because I'm your mother that's why.
我是你妈，这就是为什么！

If you fall out of that tree and break you leg , don't come running to me.
如果你从树上掉下来摔断了腿，别跟我这哭哭啼啼的！

来自:和谐英语学习网-口语频道