I have a pain _my back.用in 还是on 呢.一定正确快些..
问题描述:
I have a pain _my back.用in 还是on 呢.一定正确快些..
答
当然用in了,因为是身体的一部分
如果说He carried a bag on his back.背上背一个包.这是才能用on呀是吧就这样的~.