小學三年級英語下冊課本內容是如下：
壹、Unit1 Where did you go on vacation?
二、Unit2 How often do you exercise?
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.
七、Unit 7 Will people have robots?
八、Unit 8 How do you make a banana milk shake?