Unit7 Topic2重点词组:1. at the birthday party在生日聚会上 2. perform ballet跳芭蕾舞 3. dance to disco 跳迪斯科 4. take these flowers to 把这些花带去 5. work out math problems 解出数学题 6. read books 读书 7. fly a kite放风筝 8. be good at / do well in doing擅长做 9. have a good time /enjoy oneself玩得开心 10. with ones help / with the help of 在某人的帮助下重点句型11. Can/Could you dance? Yes, I can/could. No, I cant/couldnt. 12. What can you do? I can speak English. He cant sing Engli