人教版三年级下册有10个单元。

小学三年级英语下册课本内容是如下：

三、Unit3 I'm more outgoing than my sister.四、Unit4 What's the best movie theater?五、Unit5 Do you want to watch a game show?

六、Unit6 I'm going to study computer science.

八、Unit 8 How do you make a banana milk shake?

九、Unit 9 Can you come to my party?

十、Unit10 If you go to the party,you 'll have a great time!