YOU SAID:

i'm so tired i can't sleep

INTO JAPANESE

私はとても疲れていたので寝ることはできません。

BACK INTO ENGLISH

You can't go to bed because I was so tired.

INTO JAPANESE

とても疲れていたので、ベッドに行くことができません。

BACK INTO ENGLISH

You can't go to bed very tired.

INTO JAPANESE

非常に疲れてベッドに行くことができません。

BACK INTO ENGLISH

Very tired, go to bed.

INTO JAPANESE

非常に疲れて、ベッドに移動。

BACK INTO ENGLISH

Very tired, go to bed.