六上 Unit4 单元知识一、词组1. then and now 过去和现在，那时和现在2. six years ago 六年前3. read and write读和写4. do many things 做许多事情5. twenty years ago 二十年前6. write letters to his friends 写信给他的朋友们7. use the telephone 使用电话8. call people 给人们打电话9. a mobile phone 一部手机10. call people anywhere 随处给人打电话11. write emails 写电子邮件12. thirty years ago 三十年前13. listen to the radio 听收音机14. read newspapers 看报纸15. read newspapers for news 为了新闻看报16. watch news 观看新闻17. on the Internet 在网上18. rea
