人教pep版小学三年级英语下册电子课本 Unit 1 Welcome back to school Hello, boys and girls. I'm Miss Li. Welcome back to school. Good morning, Miss Li. Good morning, everyone. Let's sing a song. Good, let's sing. Unit 2 What's in the schoolbag? Look, this is my schoolbag. What's in it? Let me see. There's a pencil, a ruler, an eraser and a book. Oh, there's a pencil-box, too. Yes, there is. Unit 3 What colour is it? What colour is this? It's red. What colour is that? It's blue. Unit 4 Let's play Let's play a game. 本文来源：https://www.wddqw.com/doc/7355f6014bd7c1c708a1284ac850ad02de8007c9.html