12.You can be in our school music festival. 你可以参加我们学校的音乐节。

be in意为"参加，加入"

13.Please call Zhang Heng at 622-6033. 请给张恒打电话拨打622-6033。

call sb at + 电话号码 意为"给某人打电话拨打···号

14. What's your address? 你的地址在哪里？

问"你的地址在哪里？"疑问词是what而不是where. 如：What's your e-mail address?

15.Can you play the guitar well? 你弹吉他会弹得很好吗？

play the guitar well "弹吉他弹得好"，well是good 的副词，用来修饰实义动词play，修饰实义动词要用副词。

16.Come and show us. 来出示给我们看。

show sth to sb = show sb sth "把某物给某人看"如：Show your photo to me.= Show me your photo.

短语：

play the guitar 弹吉他 play the piano 弹钢琴 play the trumpet吹喇叭

play the drums 敲鼓 play chess 下象棋 speak English 说英语

speak a little English 说一点英语 say it in English 用英语说它

join the art club 加入艺术俱乐部 join the basketball club加入篮球俱乐部

join the swimming club加入游泳俱乐部 what club 什么俱乐部

play the guitar well 弹吉他弹得好 be good with sb和某人相处的好

be good for···对······有益处 be good at···擅长······

help sb with sth / doing sth帮助某人干某事 help kids with swimming帮助孩子