Unit 3 Back to the past

一、重点单词

1. destroy

【用法回顾】 辨析：

* destroy 为及物动词，常指彻底破坏，以致不能或很难修复，常作"破坏，毁灭"讲，也可指"希望、计划等破灭"，如destroy the hope，其名词为destruction.

* damage 可作及物动词和名词，指部分损坏或使用价值有所降低；作名词时常用do damage to/ cause damage to。

* ruin 可作及物动词和名词，表严重破坏，强调致该物原有的品质降低了或变坏了；表示"废墟"时常用复数ruins，如be/ lie in ruins 成为废墟。

【考点训练】根据句意，用destroy，damage或ruin的适当形式填空。

(1) The flood caused serious ________ to the crops.

(2) The city was completely ________ by the earthquake yesterday and now it is in ________.

二、重点短语

1. break down (机器)出故障；(身体)垮了；(精神)崩溃；(物质)分解；(计划、谈判)失败

【联想拓展】

然闯入(vi.)；打断 分散；关系破裂；会议结束；学校放假

break off 突然停止；折断 break into 突然闯入(vt.)；突然开始(笑、唱等)

爆发 突破

break away from 脱离；挣脱 break up with sb. 与某人分手

【考点训练】根据句意，使用以上短语的适当形式填空。

(1) The computer system ____________ suddenly while he was searching for information on the

Internet.

(2) Last night, a thief ____________ and stole away his camera.

(3) Hearing the sad news, the old woman ___________ tears.

(4) I was still sleeping when the fire ___________, and then it spread quickly.

(5) You'd better ___________ the habit of smoking.

2. take over 夺取；接替；接管; 占领，夺取; 占上风，取而代之

【联想拓展】