短语拓展：

in time 及时

in trouble处于困境

in peace和平地

in surprise惊讶地

in place在合适的位置，准备就绪

8.blame v.把......归咎于

短语拓展：

blame sb. for把......归咎于某人；因......指责某人

blame ...on sb.把......归咎于某人

be to blame (for sth.)(对坏事)负有责任

辨析blame/charge/ accuse

易混词 词义 区别 blame 指责 blame sb. for charge 指责 chargesb. with accuse 指责 accuse sb. of She blamed him for the failure of their marriage.她把婚姻的失败归咎于他。

She charge me with neglecting my duty.她指控我玩忽职守。

The surgeon was accused of negligence.这个外科医生被指责失职。

9.at random随便地，任意地，胡乱地

Choose a card at random from the deck. 从一副牌中任意选出一张

The librarian took a book at random from the shelf. 图书管理员从书架上随便拿了一本书。

短语拓展：

at ease 无拘无束

at peace处于和睦状态

at risk处于险境

10.by prep.凭借

1)(表示)凭借

The house is heateh by gas.这房子是煤气供暖的。

2)由于

He succeeded by hard work.他由于努力工作而成功了。

3)按照，根据

By my watch it is half past eleven.我的表是11:30。

4)不迟于(某时间)

We have to be home by ten o'clock.我们10点钟之前必修到家。