YOU SAID:

I'm very tired, I really need to sleep

INTO JAPANESE

私はとても疲れている、本当に寝る必要がある

BACK INTO ENGLISH

I'm so tired i really need to sleep

INTO JAPANESE

私は本当に疲れているので、本当に眠る必要があります

BACK INTO ENGLISH

I really need to sleep because i'm really tired

INTO JAPANESE

私は本当に疲れているので、本当に眠る必要があります

BACK INTO ENGLISH

I really need to sleep because i'm really tired