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Grammar detail: ことにする

2
4
JLPT:
ことにする - decide
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verb plain form
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ことにする
means
decide to do (verb)
DETAILS
だいがくせい
大学生
だから
べんきょう
勉強
することにするよ！
You're a university student, so study!
Sometimes the additional meaning 'hereby decide to do' is implied.
DETAILS
こんげつまつ
今月末
で
かいしゃ
会社
をやめることにした。
I've decided to quit my job at the end of this month.
MORE EXAMPLES
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See also:
  • 決(き)める - decide
  • ことにする vs に決（き）める

Kanji used in this grammar

大
ダイ   タイ   おおきい big   おおいに very much   おお-    
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1
学
ガク   まなぶ to learn   
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1
生
セイ   ショウ    life   なま raw   いかす to enliven   いきる to live   いける to arrange flowers   うまれる to be born   うむ to give birth to   き pure, undiluted   おう to grow, to sprout   はえる to grow, to sprout   はやす to grow, cultivate   
1
勉
ベン    exertion   
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2
強
キョウ   ゴウ   つよい strong   つよまる to get stronger   つよめる to strengthen   しいる to compel, to force   
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2
今
コン   キン   いま now   
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1
月
ガツ   ゲツ   つき month; moon   
1
末
マツ   バツ   すえ end   
3
会
カイ   エ   あう to meet   
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2
社
シャ    company   やしろ Shinto shrine   
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2
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