词汇书在讲“concentrate”时说,它当“集中”讲时是不及物动词,所以要和介词on搭配,如：concentrate

concentrate on concentrate on 和 concentrate to 的用法和区别? concentrate on 和 concentrate to 有什么区别 concentrate on 和 foucus on 区别 centre on 和 concentrate on比较 concentrate造句 注意,不是concentrate on CONCENTRATE ON有无现在进行时 concentrate on等于 concentrate on的用法 concentrate more on 与concentrate much on 都可以吗 如过对方说:I can not concentrate on my work these days.我该说什么啊(用英语 concentrate more on study/studies