concentrate,center,focus 這組動(dòng)詞均含有“集中”之意。其用法區(qū)別是:?

concentrate表示“吸引到(固定在)一個(gè)中心之上”;通常用作及物動(dòng)詞,賓語(yǔ)可以是具體事物,也可以是抽象事物;在作不及物動(dòng)詞時(shí),作“集中注意力思想等”解。如:?

The general decided to concentrate his forces near the capital.這位將軍決定把他的部隊(duì)集中在首都附近。?

I can't concentrate when I am hungry.當(dāng)我餓時(shí)就無(wú)法集中精神。?

center作及物動(dòng)詞或不及物動(dòng)詞。強(qiáng)調(diào)事或物所集中的那個(gè)中心點(diǎn) ,如:?

The discussion centres round the problems the broad masses of the people are concened about most.討論集中在廣大群眾最關(guān)心的問題上。?

The topic today centers about the crisis in the Middle East.今天課題的中心是寧東危機(jī)。

focus作及物動(dòng)詞和不及物動(dòng)詞。意為“焦點(diǎn)，幾條光線或其它射線相交的一點(diǎn)”;強(qiáng)調(diào)同類事物匯集到一點(diǎn)上，融成一體。如:?

They focused all their attention on finding a solution to the problem.他們集中全部注意力尋找解決問題的辦法。

He focused his mind on his lessons.他把注意力集中在他的功課上。