Let's read.It's rainy.Look at the boy, a cat and a little frog.What are they doing?They are playing in the rain.Shall we join them?让我们读一读。下雨了。看那个男孩,一只猫和一只小青蛙。他们在做什么?他们在雨中玩耍。我们加入他们好吗?