concentrate on 意思是集中精力于
可直接接名詞concentrate on sth
或接動(dòng)詞ing concentrate on doing sth
或 concentrate one's effort on sth/doing sth
例句如下：
* I can't concentrate (on my studies) with all that noise going on. 吵鬧聲不絕於耳, 我精神無法集中（於學(xué)習(xí)）.
* We must concentrate our efforts on improving education. 我們必須致力於改進(jìn)教育工作.
* Having failed my French exams, I decided to concentrate on science subjects. 我因法語(yǔ)考試不及格而決心專攻理科.
* This firm concentrates on the European market. 這公司把工作重點(diǎn)集中在歐洲市場(chǎng).
concentrate to后面一般加動(dòng)詞,意思是專心去做某事.不知對(duì)不對(duì),靠大家了