concentrate 什么意思

concentrate: [ 'k�0�0nsentreit ]

n. 浓缩,精选

v. 集中,专心,浓缩

[计算机] 集中

词形变化:

形容词:concentrative 副词:concentratively 名词:concentrator 动词过去式:concentrated 过去分词:concentrated 现在分词:concentrating 第三人称单数:concentrates

例句与用法:

1. I can't concentrate on my work when I'm tired.

我累了就无法集中精力工作。

2. The crowds concentrated round the palace.

人群汇集在宫殿的四周。

3. The threat of going bankrupt is very unpleasant but it certainly concentrates the mind.

即将破产的威胁虽令人极烦恼，但确也能逼迫人开动脑筋。

英英解释:

名词concentrate:

1. the desired mineral that is left after impurities have been removed from mined ore

同义词：dressed ore

2. a concentrated form of a foodstuff; the bulk is reduced by removing water

3. a concentrated example

动词concentrate:

1. make (the solvent of a solution) dense or denser

2. direct one's attention on something

同义词：focus, center, centre, pore, rivet

3. make central

同义词：centralize, centralise

4. make more concise

同义词：digest, condense

5. draw together or meet in one common center

6. compress or concentrate

同义词：condense, contract

7. be cooked until very little liquid is left

同义词：boil down, reduce, decoct

8. cook until very little liquid is left

同义词：reduce, boil down

比较以下几个单词/短语的区别？

OK,lz,我可以帮你解释一下1和3：

drive这个单词意思是“驾驶”，是一个动词，那么drives是这个动词的第三人称单数形式，但是还是一个动词。

driver这个单词意思是“驾驶员”或者是“驱动程序”都是可以的，那么drivers就是你所说的“驱动程序”的复数形式

center和centre都是名词，意思是“中心”，只不过一个是英式拼法一个是美式拼法，类似的单词还有colour和color,都表示“颜色”的意思。而central是一个形容词，意思是“中心的”

第二个问题你可以去百度搜一下看看是不是有结果，而你的第四个问题实在太宽泛了不是三言两语就能讲明白的。

His parents work in the___(center)city of friends.为什么要填centeral，而不是center.

center是名词，centeral是形容词，在这里修饰city。

另：副词可以修饰形容词和动词，形容词可以修饰名词。