[JLPT grammar] The difference between ことになる and ことにする

Today I am going to share the homework correction quoted from my JLPT course!
The student’s sentence is not correct. Can you find the mistake?


[Student’s sentence]





[My correction]

I jog every morning for my health.

ことにする indicates that the decision was made by the speaker, while ことになる indicates that someone other than the speaker made the decision or that it was naturally determined.

You have willingly decided “I jog for my health!”, so you should use ことにする. Additionally, adding 〜ている (ことにしている) expresses a routine.

I decided to learn 5 new Kanji every day.

The family trip will be to Kyoto.
(I have not decided. Someone in my family decided. Or it was naturally decided by discussion.)

Our team is scheduled to have a meeting every Monday at 10:00.
(Rules set by the company’s team.)


I hope my explanation helps you. 😊


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