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备战考研英语，大众考生的第一反应便是从英语词汇入手。努力的开始一定要牢固基础。考研英语基础层级一定是英语词汇，一定要努力拿下英语词汇！

1.at intervals  不时，每隔...

音标 [æt ˈɪntəvəlz]

例句

She woke him for his medicines at intervals throughout the night.

她夜里每隔一段时间就叫他起来服药。

Kites whooshed above the beach at intervals.

风筝在沙滩上空时隐时现。

2.collision with sb/sth  碰撞，冲突

音标 [kə'lɪʒ(ə)n]

例句

His political activities had brought him into collision with the law.

他的政治活动触犯了法律。

A car was in collision with a bus on the bridge.

一辆小汽车和一辆公共汽车在桥上相撞。

3.at home  在家，在国内；舒适；精通

音标 [ət ˈhəʊm]

例句

Once I had had a baby I had the perfect excuse to stay at home.

一旦有了宝宝，我就完全有理由呆在家里了。

Last night they stayed at home and watched TV .

昨晚他们呆在了家里看电视。

4.at heart  内心里，本质上

音标 [æt hɑːt]

例句

He was a very gentle boy at heart.

他实际上是个非常温柔的男生。

She told him she only had his interests at heart.

她告诉他自己万事都是为了他好。

5.at hand  在手边，在附近

音标 [æt hænd]

例句

The examination is near at hand.

考试临近了。

Having the right equipment at hand will be enormously helpful.

手头上有合适的设备将会帮上大忙。