【解释】

war "战争"的总称，一般包括多个战役的大规模战争。

battle "战斗"，指有组织的武装部队之间的战斗，有持续几小时的，也有持续几天的。

campaign"战役"，指在某一地区所进行的一连串有固定目的的军事行动，规模比battle大；还用来表"政治或商业性的活动、竞选活动"campaign for/against 从事运动 【练习】根据句子的意思在括号里填入适当的词。

1). They won the _______ but lost the _______.

2). The city hall is planning to start a _______ against smoking.

Keys: 1). battle; war 2). campaign 2. worth / worthy / worthwhile 【解释】

worth 只能作表语，其后接钱数、名词或及物动词的动名词的主动一般形式: be worth doing

worthy可作表语，后接of+名词/of+动名词的被动形式/不定式的被动形式: be worthy of + n.

/ of being done / to be done

也作定语，"值得......的"，"有价值的"：a worthy winner名副其实的赢家

worthwhile可作表语和定语: a worthwhile job 值得做的工作 it is worthwhile to do/doing 【练习】根据句子的意思在括号里填入适当的词。

1). The necklace was ______ 100 francs at most.

2). It' s ______ to discuss the question again.

3). You would find it ______ your while to come to the meeting.

4). Can' t you find something ______ doing at all? The book is _______ _______ _______ (很

值得读) a second time.

5). This place of interest is worthy _______ _______ _______ / _______ _______ ______ /_______ _______ _______ (参观).

Keys: 1). worth 2). worthwhile 3). worth 4). worth; well worth reading

5). of a visit / of being visited / to be visited 3. argue / debate 【解释】

argue指某人坚持自己的主张，举出事实和理由说服某人或反对其他方面的意见。

debate指辩论者长在自己的立场公开争论一个问题。 【练习】根据句子的意思在括号里填入适当的词。

1). We ______ with her ______ how to go there.

2). They ______ the case for hours.

3). They ______ the question openly.

4). Last week, our class had a ______ over whether middle school students should carry cell phones at school.

Keys: 1). argued; about 2). argued 3). debated 4). debate III 词性变化 （旨在提供语法填空所需材料）

1. connect vt.连接；联系；

　接通电话 vi.连接，衔接 connection n.联系，关

系；连接 2. argue vt.&vi.讨论；辩论 argument n.[c]争论；争辩； 3. crowd n. 人群，群众；

v. 聚集；挤满；挤，推 crowded adj.充(拥)满了的，拥挤的