- 大雨で、サッカーの試合は中止せざるを得なかった。The heavy rain forced us to cancel the soccer match.
- 勇気は認めるが、こんな登山計画は無謀だと言わざるを得ない。I admit your courage, but I have to say that such a mountaineering plan is reckless.
- 明日から出張の予定だったんだけど、インフルエンザにかかってしまい、休まざるを得ない。I was planning a business trip from tomorrow, but I got the flu and had to take a rest.
It belongs to written language, which means that there is no other way. Contains "I didn't want to do it, but I had to do it due to some pressure or reason".