expensive adj.花钱多的；昂贵的
/ IkspensIv /
一克死班谁（sei）屋
ex前缀（除了），pen钢笔，s蛇，iv罗马数字4，e鹅
除了买钢笔外，蛇还买了罗马的4只鹅，不过价钱都是昂贵的。
（进口货，当然贵啦！）
Only adv.只
/ Enli /
欧嗯 里
on在…上面，ly绿叶
在绿叶上面只有唯一的一只昆虫。
Worth n.价值；
/ w:T /
沃饿 死 沃饿连音, 死轻音(牙抵舌头)
我死→我死得很有价值
wo我，rt认同，h虎
我个人认同老虎的药用价值。
Certainly adv. 当然
/ s:tnli /
ser ten li
ce车，r人，tain太闹，ly老爷
车上的人太闹了，老爷当然生气了
written exercises 书面练习
A Complete these sentences.
模仿例句完成以下句子。
Examples：
This dress is long, but that one is ______.
This dress is long, but that one is longer.
Tom is intelligent, but Bill is ______.
Tam is intelligent, but Bill is mare intelligent.
1 This book is cheap, but that one is ______.
2 This book is expensive, but that one is ______.
3 This question is easy, but that one is ______.
4 This question is difficult, but that one is ______.
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