Mimi Kara Oboeru N4 Grammar: 69. ~ことになる

Mimi Kara Oboeru N4 Grammar: 69. ~ことになる (koto ni naru)
Here is Japanese N4 grammar study material taken from the Mimi Kara Oboeru N4 textbook.

~ことになる

1. Meaning: A decision based on circumstances or someone else’s will, or something decided after discussion.

2. Structure: Dictionary form / ない form + ことになる

来月出張でアメリカへ行くことになりました。
Raigetsu shutchō de Amerika e iku koto ni narimashita.
I have been told I will go on a business trip to America next month.

次の同窓会は東京で開くことになりました。
Tsugi no dōsōkai wa Tōkyō de hiraku koto ni narimashita.
It has been decided that the next class reunion will be held in Tokyo.

奨学金がもらえることになって、うれしいです。
Shōgakkin ga moraeru koto ni natte, ureshīdesu.
I have been told I will receive a scholarship, I am so happy!

会議室はほかのグループが使うので、私たちは使えないことになった。
Kaigijitsu wa hoka no gurūpu ga tsukau node, watashitachi wa tsukaenai koto ni natta.
The meeting room is already being used by another group, so we cannot use it.

3. Note: even when the decision is based on your own will, 「～ことになる」 is often used when telling other people

私たち、来月結婚することになりました。
Watashitachi, raigetsu kekkon suru koto ni narimashita.
We have decided to get married next month.