At midnight when the moon is full,you can hear the wloves.这里有定语从句吗?

题目

At midnight when the moon is full,you can hear the wloves.这里有定语从句吗?

答案

when the moon is full是定语从句,先行词是midnight ：
在月圆之日的午夜.你能听到狼的嚎叫声.