〜ことになる
Formation
N4
Meaning
Used when saying that a decision has been made regardless of your own will, or as a result of circumstances.
Examples
来月から日本へ出張することになりました。
It has been decided that I will go to Japan on a business trip from next month.
来月から新しいルールが始まることになります。
It has been decided that a new rule will start from next month.
これ以上、その問題については話し合わないことになりました。
It has been decided that we will not discuss that issue any further.
急に予定が変更されることになりました。
It has been decided that the schedule will be changed suddenly.