don't have to go
彼は学校へ行かなくてもよい。
He doesn't have to go to school.
君がもし行きたくないのなら、行かなくてもよい。
If you don't want to go, you don't have to.
彼女は土曜日学校に行かなくてもよい。
She doesn't have to go to school on Saturdays.
彼は今日は学校に行かなくてもよい。
He doesn't have to go to school today.