集中する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 集中する | 集中しない |
| Polite | 集中します | 集中しません |
| Past polite | 集中しました | 集中しませんでした |
| Past | 集中した | 集中しなかった |
| Te-form | 集中して | 集中しないで |
| Desire | 集中したい | 集中したくない |
| Potential | 集中できる | 集中できない |
| Passive | 集中される | 集中されない |
| Causative | 集中させる | 集中させない |
| Causative passive | 集中させられる | 集中させられない |
| Volitional | 集中しよう | |
| Polite volitional | 集中しましょう | |
| Imperative | 集中しろ | 集中するな |
| Conditional | 集中すれば | 集中しなければ |
| Tara conditional | 集中したら | 集中しなかったら |
noun, noun or participle which takes 'suru', transitive verb, intransitive verb
concentration; focus one's attention
Used for directing one's attention or mental effort to a task, object, or point; commonly takes に as in 仕事に集中する, and can also be transitive in expressions such as 注意を集中する.
試験中は問題に集中してください。
During the exam, please concentrate on the questions.
彼は画面に集中していて、返事をしなかった。
He was focused on the screen and did not answer.
noun, noun or participle which takes 'suru', transitive verb, intransitive verb
concentration in one place; centralization; gathering
Used when people, buildings, power, money, functions, or similar things are gathered in or directed to one place, organization, period, or point.
人口は都市部に集中している。
The population is concentrated in urban areas.
会社は権限を本社に集中した。
The company centralized authority at the head office.
noun, noun or participle which takes 'suru', transitive verb, intransitive verb
focus of questions; focus of debate; convergence
An abstract extension used when questions, criticism, attention, discussion, or attacks converge on one person, issue, or point.
記者の質問は監督に集中した。
The reporters' questions focused on the coach.
議論は予算の使い道に集中した。
The debate focused on how the budget would be used.
within a collection of works
Limited bibliographic or literary use meaning 'in/within a collection,' usually seen as part of compounds or phrases such as 歌集中 or 句集中 rather than as the everyday meaning 'concentration.'
「歌集中」は「歌集の中で」という意味で使われることがある。
歌集中 is sometimes used to mean 'within a poetry collection.'
He concentrated on his studies.
The population is concentrated in the cities.
The criticism was all directed at him.
I solved the problems while concentrating hard.