本文和大家分享的英语口语表达是：Child's play。play在这里作名词，是“游戏、玩耍”的意思，child's play 就是小孩子做的事情，这样的事情当然很简单，很单纯，有些事情在大人看来甚至毫无意义。
这个口语表达在日常交流中就是an extremely simple task or act; Something very easy to do等“非常简单的任务或行为，或者是轻而易举的事情”，相当于我们熟悉的 a piece of cake.
- The final exam is child's play to those who took good notes.
对于笔记做的好的人来说，期末考试太简单了。 - Once you've mastered English, learning other languages should be child's play.
一旦你掌握了英语，学其他语言也易如反掌。
下面我们再看两个例句：
- Finding the right street was child's play with a map.
有地图在手，要找对路太容易了。 - It is no child's play to take a wife.
娶老婆可不是过家家。
child's play还可以表示something that is insignificant，微不足道的事情，或毫无意义的事情。
- His injury was child's play compared with the damage he did.
她受的伤与他所造成的损害来比是微不足道的。 - Figuring out the password was child's play.
找出密码是毫无意义的事情。
