YOU SAID:

My teacher said that he can't just lay down and die when he's 85

INTO JAPANESE

私の先生は、彼が寝てから死んではいけないと言った。

BACK INTO ENGLISH

My teacher said he should not die since he was asleep.

INTO JAPANESE

私の先生は眠っていたので死ぬべきではないと言った。

BACK INTO ENGLISH

My teacher said that he should sleep because he was sleeping.

INTO JAPANESE

私の先生は、彼は彼が寝ていたために眠る必要がありますと述べた。

BACK INTO ENGLISH

My teacher said he must sleep because he was asleep.

INTO JAPANESE

私の先生は彼が眠っていたので彼は眠らなければならないと言った。

BACK INTO ENGLISH

My teacher said that he was asleep, so he must sleep.

INTO JAPANESE

私の先生は彼が眠っていたと言ったので、彼は眠らなければなりません。

BACK INTO ENGLISH

My teacher said that he was asleep, so he must sleep.