【解释】

across 表示从表面上横穿，横跨

through 表示穿过空间内部

over 表示"越过"，指从较高物体的一侧到另一侧 【练习】用上面所提供的辨析词的适当形式填空

The Great Wall winds its way ____high mountains, ___ deep valleys and ___ great

deserts.

Keys: over...through...across 3. persuade / advise 【解释】

persuade 指通过劝说、感情交流等而使对方做劝说者所希望的事。强调劝说已收到成效。

advise 并不涉及是否有成效 【练习】用上面所提供的辨析词的适当形式填空

1). Some of us ________ him to change his mind but no one could _________ him to do so.

Keys: 1). advised...persuade 4. beneath / under / below 【解释】

beneath 书面用词，指紧挨......之下

under 普通用词，指在某物的正下方

below 指位置低于某物或在某物下方，但不一定在正下方， 所指范围较宽 【练习】用上面所提供的辨析词的适当形式填空

1). Write your name _______ the line.

2). They found the body buried a pile of leaves.

3). They stood ________ a big tree.

Keys: 1). below 2). beneath 3). under II 词性变化 （旨在提供语法填空所需材料）

1. organize vt. 组织 organized adj. 有组织的 organization n. 组织 2. wool n. 羊毛 woolen adj. 毛纺的; 纯毛的 3. determine v. 决定 determined adj. 坚决的 determination n. 决心; 坚定性 【练习】用括号内所提供词的适当形式填空

　1) He's involved in the _______ of a new club. (organize)

2) She's a highly ________ person. (organize)

3）She _______ the class into four groups. (organize)

4）These goats are specially bred for their _______. (wool)

5）Those are _______ blankets (wool)

6）His father is a leader with courage and _________. (determine)

7) She will ________ how it is to be done. (determine)

8) I'm ________ to succeed. (determine)

Keys: 1) organization 2) organized 3) organized 4) wool

5) woolen 6) determination 7) determine 8) determined