3). There is every ________ (indicate) of a change in the weather.

Keys: 1). indicated 2). indicated 3). indication

5. slip vi. 滑动；滑行；滑跤 n. 滑倒；小过失；失误 slippery adj. 滑溜的

[典例]

1). My foot slipped and I nearly fell. 我的脚一滑，差点跌到。

2). She slipped into the room when no one was looking. 她趁无人注意的时候溜进了房间。

[重点用法]

let slip... 错过......；无意中说出 let sth. slip through your fingers错过(机会)，失去(机会)

a slip of the tongue 口误

[练习] 根据句子的要求在括号里填入适当的词或翻译。

1). She ________ ________ (无意中说出) that she was intending to leave the company.

2). As the years _________ by, I thought more and more about him.

3). Drive very carefully; the roads are wet and ________ (slip).

Keys: 1). let slip 2). slipped 3). slippery

6. insert vt.插入，嵌入

[典例]

He inserted a key into a lock. 他把钥匙插进锁中。

[重点用法]

insert sth (in/into/between sth) 插入、放入、置入或嵌於某物或某两物间

[练习] 根据句子的要求在括号里填入适当的介词。

1). She inserted an additional paragraph ________ an essay.

2). Insert your fingers ________ the layers and press them apart.

Keys: 1). in 2). between

Ⅳ.重点词组（旨在提供综合运用所需材料）

1. live on 继续生活或存在

[典例]

She lived on for many years after her husband died. 丈夫死後她继续活了多年。

[短语归纳] live短语：

live on sth 以某物为食；靠某种经济来源生活 live by doing sth 靠做某事物为生

live for sth 以某事物为生活目标 live through sth 经历某事物而幸存

live together 在一起生活；同居 live up to sth 依照某事物行事；表现出符合某事物的标准

live with sth 接受或容忍某现象 live to be... = live to the age of... 活到......岁

live a... life 过着......的生活

[练习] 根据句子的意思在括号里填入适当的live短语。

1). The lonely old man _______ _______ charity.

2). Mozart is dead but his music _______ _______.

3). My grandfather _______ _______ both world wars.

4). We should work hard and try to _______ _______ _______ our parents' expectations.