【解释】

frequent经常的，时间或间歇很短的发生或出现

common 通常的、常发生的、广泛使用或众所周知的

ordinary指种类普通且不能从其他中加以区别的，有时含贬义

general一般性的，到处的；不限于领域、地区或应用

regular平常的；惯例的；习惯性的、通常的或正常的

【练习】用上面所提供的辨析词的适当形式填空

1). This is a ___________ problem.

2). He often makes ___________ errors of judgment.

3)．Look at the train's ___________ schedule.

4)．The violinist gave a very ___________ performance marked by an occasional memory lapse.

5)．As a ____________ rule I am home by six.

答案: 1). common 2). frequent 3). regular 4). ordinary 5). general 3. especially/ specially 【解释】

especially意思是"尤其，特别"，表达事物的不寻常或特别重要

specially 指为了某一目的，专门做某事

【练习】用上面所提供的辨析词的适当形式填空

1). Our city is very beautiful, ___________ in spring. 我们城市很美丽，尤其在春天。

2). He came here ___________ to ask you for help. 他是专程来这里向你求助的。

答案: 1). especially 2). specially 4 a number of / the number of 【解释】

a number of意思是"若干；许多"

the number of意思是"......的数目" 【练习】用上面所提供的辨析词的适当形式填空

1). Today ___________ people learning Chinese in the world is raising rapidly.

2). ____________ books in the market are in English.

答案: 1). the number of 2). A number of II词性变化 （旨在提供语法填空所需材料）

1. actual adj. 实际的 actually adv. 实际上；事实上 2. base n. 基地；基础 base v. 以......为根据 basic adj. 基本的 3. east n. 东方 eastern adj. 东方的；东部的 【练习】用括号内所提供词的适当形式填空

　1) What did he _________ say? (actual)

2) The __________ cost was much higher than we had expected. (actual)

3）My knowledge of physics is pretty _________. (base)

4）She used her family's history as a _________ for her novel. (base)

5）This novel is ________ on historical facts. (base)

6）He is interested in ________ customs. (determine)

7) The wind is blowing from the __________. (determine)

答案: 1) actually 2) actual 3) basic 4) base

　　　5) based 6) eastern 7) east