have never had
今まで重い病気にかかったことがないって、本当なの?
Is it true that you've never had a serious illness before?
彼は医者にかかったことがないのが自慢だ。
He is proud that he has never had to see a doctor.
うちのおじいさんは生まれてから医者にかかったことがない。
My grandfather has never seen a doctor in his entire life.
父は今までに病気にかかったことがない。
My father has never been sick before.