SAT重点单词详解：alternate

2014-11-15 12:19:20来源：网络

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　　交替的

　　alternate[英]['ɔ:ltɜ:nət][美][ˈɔltərˌneɪt]

　　adj.轮流的; 交替的; 间隔的; 代替的;

　　vi.交替; 轮流;

　　vt.使交替; 使轮流;

　　n.〈美〉(委员)代理人; 候补者; 替换物;

　　第三人称单数：alternates过去分词：alternated现在进行时：alternating过去式：alternated

　　柯林斯高阶英汉词典：

　　The verb is pronounced /'ɔːltəneɪt/. The adjective and noun are pronounced /ɔːl'tɜːnət/. 动词读作 /'ɔːltəneɪt/，形容词和名词读作 /ɔːl'tɜːnət/。

　　1.V-RECIP-ERG(使)交替;(使)轮流When you alternate two things, you keep using one then the other. When one thing alternates with another, the first regularly occurs after the other.

　　Her aggressive moods alternated with gentle or more co-operative states...

　　她情绪多变，时而咄咄逼人，时而又显得温柔平和或乐于合作。

　　alternation

　　The alternation of sun and snow continued for the rest of our holiday.

　　我们剩余的假期里依旧时而晴天时而下雪。

　　2.ADJ交替的;轮流的Alternate actions, events, or processes regularly occur after each other.

　　They were streaked with alternate bands of colour.

　　它们都带有各种色彩相间的条纹。

　　alternately

　　He could alternately bully and charm people...

　　他一会儿欺负人一会儿取悦人。

　　She became alternately angry and calm.

　　她时而愤怒时而平静。

　　3.ADJ每隔一(天等)的If something happens on alternate days, it happens on one day, then happens on every second day after that. In the same way, something can happen in alternate weeks, years, or other periods of time.

　　Lesley had agreed to Jim going skiing in alternate years.

　　莱斯莉已同意吉姆每隔一年去滑一次雪。

　　4.ADJ供选择的;备用的;其他的You use alternate to describe a plan, idea, or system which is different from the one already in operation and can be used instead of it.

　　His group was forced to turn back and take an alternate route.

　　他的小组被迫返回并选择了另一条路线。

　　5.N-COUNT代替者;候补者An alternate is a person or thing that replaces another, and can act or be used instead of them.

　　In most jurisdictions, twelve jurors and two alternates are chosen...

　　大多数辖区都会选出12名陪审员和2名候补陪审员。

　　6.ADJ(尤其在美国英语中，当alternative作义项3、4和5解时，代替alternative使用)Alternate is sometimes used, especially in American English, instead of alternative in meanings 3, 4, and 5.

　　...an alternate lifestyle.

　　另一种生活方式

　　例句:

　　1.The two types alternate, so that each channel has one wall of each type.

　　两种薄膜交替使用，每个管道都具有这两种薄膜壁。

　　2.Week 2: alternate walking 3 minutes with running 30 to 60 seconds for a total of 20 to 25 minutes.

　　第二个星期：步行3分钟后慢跑30到60秒，此循环交替进行20到25分钟。

　　3.The second thing japan needs is for parties to alternate in power.

　　日本需要的第二件事便是政党轮流当权。

　　4.It said alternate aircraft would be used for international flights on thursday.

　　该公司说，周四的国际航班将由备用飞机执飞。

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