Learn JLPT N4 Grammar (koto ni suru)

How to use

Verb (dictionary form)
Verb )ない form)

Learn Japanese grammar: (koto ni suru) / (koto ni shimasu). Meaning: to decide on.

  • (koto ni suru) is used to express what one has decided on.
  • Add it after a verb to say that’s what you’ve decided on

Example A)

  • いかない
  • ikanai koto ni suru
  • I’ve decided to not go

Different ways to use:

  • ことにする (koto ni suru) casual
  • ことにします (koto ni shimasu) more polite
  • ことにしている (koto ni shiteiru) current
  • ことにしています (koto ni shiteimasu) current polite
  • To use with a noun, remove the こと
  • See all related grammar
JLPT grammar ことにする (koto ni suru)  - Learn Japanese

- Example Sentences

Each example sentence includes a Japanese hint, the romaji reading, and the English translation.

Click the below red button to toggle off and and on all of the hints, and you can click on the buttons individually to show only the ones you want to see.

Example #1

kore kara mainichi ranningu wo suru koto ni suru.
I've decided to go running every day from now on.
Example #2

tabako wo yameru koto ni shita.
I've decided to quit smoking.
Example #3

haruyasumi ni okusan to isshoni taiwan ni iku koto ni shimasu.
I've decided to go to Taiwan with my girlfriend during spring break.
Example #4

neru mae ni tabenai koto ni shimashita.
I've decided to stop eating before going to bed.
Example #5

Maiasa, 30 pun jogingu suru koto ni shite imasu.
I've decided to go jogging every morning for 30 minutes.
Example #6

Natsu yasumi ni tomodachi to Okinawa ni ryokou suru koto ni shimasu.
I've decided to go to Okinawa over summer break with my friends.
Example #7

Futoranai youni yoru 9 ji o sugi tara, watashi wa tabenai koto ni shite imasu.
In order to not gain weight, I've decided to stop eating anything after 9pm.

Vocabulary List

これからfrom now on
毎日まいにちevery day
タバコをやめるたばこをやmるto quit smoking
春休みはるやすみSpring break
彼女かのじょgirlfriend; she; her
行くいくto go
寝る前ねるまえbefore going to sleep
食べないたべないto not eat

Vocabulary items are displayed based on the order they appear in the grammar lesson.

View all JLPT N4 Vocabulary Lessons

JLPT N4 vocabulary list

View all JLPT N4 Grammar Lessons

JLPT N4 grammar list

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