Unit 3
1. spend time with friends 和朋友们一起度过时光
2. a sports camp 运动野营
3. how about= what about ……怎么样
4. go camping 去野营 go shopping 去买东西
5. do some shopping 买东西,  do some washing 洗衣服, do some cooking 做饭, do some reading 读书, do some speaking 训练口语
6. how long 1)多长时间 (询问动作在时间上所延续的长度) 2）多长 （询问事物的长度）
7. show sb. sth. = show sth. to sb. 出示某物给某人看
8. get back=come back 回来
9. take walks=go for walks 散步
10. think about 考虑  
11. decide on= decide upon 决定计划
12. something different 不同的事情
13. a great/exciting vacation 愉快的(令人激动的)假期
14. can’t wait to do sth. 等不及做某事
15. a famous movie star 著名的影星
16. ask sb. about sth. 向某人询问某事
17. forget to do sth. 忘记要做某事 forget doing sth. 忘记做过某事

Unit 4
1. get to school = arrive at/ reach school 到校
2. a bus stop 公共汽车站, a train/subway station 火车(地铁站)站,
3. take the subway 乘地铁
4. ride a bike 骑自行车
5. take a bus 乘公共汽车
6. want to do sth. 想做某事
7. take a taxi 乘坐出租车
8. walk to school 步行上学
9. go in one’s car 坐(某人的)车
10. in North America 在北美
11. by bike/bus/subway/car/train 乘坐……车
12. in other parts of the world 在世界的其他地区
13. have a quick breakfast 迅速吃早饭
14. depend on=depend upon 依靠,靠……决定
15. the early bus 早班车
16. leave for 起程（动身）前往……
17. take sb. to sp. 带某人到某处
18. a number of=many 许多
19. the number of …的数量
20. Doing sth. takes sb. some time/money. =It takes sb. some time/money to do sth.某人花费多少金钱/时间做某事
21. worry about( sb./sth.)=be worried about(sb/sth.) 为某人(事)着急/担心
22. around the world= all over the world 世界各地,全世界
23. be different from 与……不同
24. how far 多远

Unit 5
1. come to one’s party 参加某人的聚会
2. on Saturday afternoon 在星期六的下午
3. study for a test 为测验而学习  
4. go to the doctor=see a doctor 去看医生
5. have/take a piano/guitar lesson 上一堂钢琴(吉他)课
6. much too 太，过于
7. too much 太多
8. a birthday party 生日聚
9. soccer practice 足球训练
10. look for 寻找
11. find out 找到,弄清楚,查明
12. be (go) on vacation 度假
13. join sb. 加入某人(的行列)
14. a football match 足球比赛
15. keep quiet 保持安静(keep+形容词“保持某状态”）keep+(sb.)+doing 使(某人)不停地做某事”
keep sth. 保存某物，饲养某物
16. a culture club 文化俱乐部
17. “给某人打电话”的几种说法：call sb.( up), phone sb.(up), phone to sb., telephone sb.(up), telephone to sb., ring sb.(up), give sb. a ring,  give sb. a phone, make a telephone (call) to sb.
18. have to 不得不，必须
19. the day after tomorrow 后天
20. a science report 科学报告