【重点句型】
1. —What do you use your computer for? —I usually use it to search for information. (p41)
〈知识链接〉What…for?＝Why…?为什么…? e.g. What did you do that for?＝Why did you do that?
2. It sounds interesting, doesn’t it? “陈述句＋附加疑问？”构成反意疑问句。 (p42)
⑴附加疑问即“助动词或助动词的否定式缩写＋主语或there”；附加疑问部分的助动词必须与陈述句保持一致，主语必须是人称代词或there，并与陈述句主语的单复数保持一致。
⑵前肯定后否定；前否定后肯定。尤其要注意“前否定后肯定”答语的英汉差异。
⑶反意疑问句的答语为“Yes, 主语＋助动词.”或“No, 主语＋助动词的否定式”。
e.g. —Simon didn’t take part in the football match, did he? —Yes, he did. Though he wasn’t feeling well.
—西蒙没有参加足球赛，是吗？—不，他参加了。尽管他当时不舒服。
3. One day, he was lying on the grass and looking at the beautiful blue sky, when he fell asleep and had a very strange dream.一天，他躺在草地上，看着美丽的蓝天，不知不觉间睡着了，并做了个奇怪的梦。
lie ①躺lieslyinglaylain ②说谎lieslyingliedlied ③位于lieslyingliedlied
〈知识链接〉⑴lie意思是“躺”，常用于lie down躺下，find sb/sth lying＋地点 ①She found a purse lying on the ground. ②I found a homeless man lying at the street corner. ⑵fall asleep睡着，e.g. He fell asleep when he was watching TV. ⑶have/dream a…dream做了一个…的梦，e.g. have/dream a strange dream
〈用法拓展〉lie ⑴说谎，e.g. ①You could see from his face that he was lying. ②tell a lie说谎
⑵位于，e.g. Jiangsu lies in the east of China.
4. See those big clouds of different colours with questions on them? You get a point every time you answer a question correctly. every time＋陈述句，每当…，引导时间状语从句。
〈知识链接〉get a point得一分，answer a question correctly答对一题
5. When you have got enough points, a cloud will come down and carry you off to a place you have never visited before. you have never visited before是省略关系代词that/which的定语从句。
〈知识链接〉have got enough points获得足够的点数，carry you off to…把你带到…
6. Are you ready? Let’s go！准备好了吗？出发！
7. For example, when you reach London, you will learn about the Museum of London and many other interesting places. ①learn about…了解… ②many other＋名词复数，其他许多… (p43)
8. Every time you pass a level, you will see a map of the world. pass a level过一关
〈知识链接〉⑴Every time＋陈述句，每当… ⑵a map of the world世界地图 a map of China
9. The places you have visited are marked in bright purple. 你到过的地方都标上了明亮的紫色。
10. Get it now before it is sold out. sell out售完，be sold out被售完，sell well好卖(不用被动)
〈知识链接〉—Have you got a size M? —Sorry, they are all sold out. They sell well.
11. I’ve bought many educational CD-ROMs before, but I’ve found none of them to be any good.
〈知识链接〉find none of them to be any good没发现一个好的
12. —How can your teacher read your homework on the computer? —I can send him e-mails or print it out. read your homework批阅作业，send sb e-mails给某人发电子邮件 (p46)
〈知识链接〉on the computer在电脑上，on the screen，on TV，on the Internet(在因特网上)
13. —Do you have a new printer, too? —Yes, and it prints very quickly. 该句的print不用被动。
14. My new computer is much faster than the old one. I can type very easily, and the keyboard is very comfortable.
15. We’ve got many kinds of personal computers. This green one is called Kiwi, and it is designed especially for students. personal computer个人电脑，简写作PC。 (p48)
〈知识链接〉⑴Kiwi ①(informal)＝a person from New Zealand新西兰人②几维鸟，新西兰鸟，喙长、翼短、无尾、不能飞③kiwi fruit猕猴桃；奇异果 ⑵be designed especially for students特别为学生而设计
16. —Is it used widely? —Of course, very widely in Beijing. be widely used被广泛使用
〈知识链接〉English is widely used as the second language in many countries. (be widely as…被广泛用作)
17. When a total of ten questions are answered incorrectly, the princess will become bald. (p51)
〈知识链接〉⑴total n.总数，总和e.g. ①You got 47 points on the written exam and 18 on the oral, making a total of 65.你笔试得了47分，口试得了18分，总分65分。②Out of a total of 15 games, they only won 2.在总共15场比赛中，他们只胜了2场。⑵become bald秃顶become＋形容词
18. The questions get more difficult as you go to higher levels.当你到更高的级别，问题就更难了。
〈知识链接〉as连词，当…时，随着…。e.g. The air will get fresher as you reach the top of the mountain.
19. She will help you when necessary.必要时她会帮助你。if necessary如果有必要 (p52)
20. Many topics are covered in the course, including travel and hotels, food and drink, and shopping and money. 这一课程涉及许多主题，包括旅游、饭店、购物和钱币。 (p53)
〈知识链接〉⑴cover＝include包括；涉及 ⑵including介词，包括…在内，e.g. ①His talk covered/included the history between the two World Wars. ②The package includes/covers a book and two CD-ROMs. ③There were ten students left in the classroom, including Tom.
21. Can you show me how to start this online tour of Australia, please?
你能告诉我如何开启这个澳大利亚的在线之旅吗？ how to start…是“疑问词＋动词不定式”。
22. Do you mind telling me how to use this function?你介不介意告诉如何使用这个功能？
〈知识链接〉mind介意，表示请求允许或客气地请人做事。注意以下两种表达的不同：
⑴Do/Would you mind my/me doing sth?或Do/Would you mind if I do sth?你介意我做某事吗？
表示请求对方的允许，答语为Of course not. Certainly not.或You’d better not. Better not.
⑵Do/Would you mind doing sth?你介意做某事吗？表示客气地请人做事。
①Do you mind my opening the window?＝Do you mind if I open the window?我开窗户好吗？
②Would you mind explaining that again, please?请你再解释一遍行吗？ 请做题
—Would you mind ? I’m feeling too tired. —Of course not. Let me do it.
A. to drive B. my drive C. driving D. my driving
23. Just double-click on the “Pencil” icon. …A worksheet has just appeared on the screen.
〈知识链接〉⑴appear是不及物动词，不能用于被动语态。appear出现disappear消失
⑵sheet n.①床单e.g. change the sheet换床单 ②一张(通常指标准尺寸的纸) e.g. 500 sheets
24. In which countries is the game sold? 这个游戏在哪些国家销售？ (p55)
〈知识链接〉In which countries不能去掉介词in，e.g. Which city did you go to last summer?
25. The goal of the game is to travel around the world to learn the history of each place and use this knowledge to open the treasure box. 当主语是goal等时，用动词不定式be to do作表语。