1. Why don't we think of things that our classmates want to buy?
 

　　怎么不考虑我们同学想买的东西呢？
 

　　Why don't we（you）+do …？= Why not + do…？
 

　　为什么不做……？常用来提出建议。例：
 

　　Why not go and see her?
 

　　为什么不去看看她呢？
 

　　类似提出建议的表示还有：
 

　　How about（What about）
 

　　Shall we do…？   Let's do…   We'd better do…等  例：
 

　　Why not go shopping this Sunday?
 

　　这个礼拜日为什么不去购物？
 

　　Let's go shopping this Sunday.
 

　　Shall we go shopping this Sunday?
 

　　How （What）about going shopping this Sunday?
 

　　2. Suddenly, Danny hears somebody say something.
 

　　突然，丹尼听到有人跟他说了些什么。
 

　　在感官听觉动词see, watch, notice, look at, hear, listen to等词后，用省略的to的动词不定式作宾语补足语。当变成被动语态时，要恢复to。例：
 

　　We often heard them argue next door.
 

　　我们常听见他们在隔壁争吵。
 

　　I saw him walk into the headmaster's office.
 

　　我看到他走进校长的办公室。
 

　　He was noticed to come in the room.
 

　　有人注意到他进了房间。
 

　　3. Sometimes, business English is hard to understand.
 

　　有时，商业英语很难懂。
 

　　此句还可以表示为：
 

　　To understand business English is hard. 或
 

　　It is hard to understand business English.
 

　　再例如：
 

　　The instructions are easy to follow.
 

　　这些说明很容易明白。
 

　　It's easy to follow the instructions.
 

　　To follow the instructions is easy.
 

　　4. How much does it cost?
 

　　它花去多少钱？
 

　　此句是用来寻问价钱的，还可以用what's the price of来表示。
 

　　How much does your coat cost?
 

　　你的大衣多少钱？
 

　　What's the price of your coat?
 

　　5. I don't think it would be safe to do my homework on a bicycle.
 

　　我认为骑在自行车上写作业不是安全的。
 

　　It was fun to sell the cookies.
 

　　卖甜饼很有趣。
 

　　这两个句子都有不定式做主语。其句式为：
 

　　It is + n. /adj + to do. 意为做某事如何……例：
 

　　It is fun to learn English.
 

　　学英语很有趣。
 

　　It's not good to speak when you have meals.
 

　　吃饭时说话不好。
 

　　6. To hold up posters, maps and other papers.
 

　　动词不定式做目的状语。动词不定式作目的状语时，可以将其放于句首，也可以放于句末。例：
 

　　To learn English well, he went to England.
 

　　为学好英语，他去了英国。
 

　　（He went to England to learn English well.）
 

　　7. He made his first push-pins by himself.
 

　　他自己做了他的第一批图钉。
 

　　make sth. by oneself 独自做……，可以表示为：
 

　　make sth. alone
 

　　He made his bed by himself（alone）
 

　　他自己做的床。
 

　　8. The Moore family still owns the company and… 。
 

　　Moore一家仍拥有这家公司……
 

　　own，动词"拥有"可以用has"替换"
 

　　owner n. "拥有者，物主"。例：
 

　　The owner of the house is Li.
 

　　这家房子的主人是李。
 

　　Li owns the house.
 

　　李拥有这个房子。
 

　　own还可以作形容词，意为"自己的"，常和形容词性物主代词连用，例：
 

　　This is our own room.
 

　　这是我们自己的房间。