YOU SAID:

i am very tired, I almost fell asleep in class

INTO JAPANESE

私はとても疲れていて、クラスでほとんど眠りに落ちました

BACK INTO ENGLISH

I was so tired that I almost fell asleep in class

INTO JAPANESE

とても疲れていたので、クラスでほとんど眠りに落ちました

BACK INTO ENGLISH

I was so tired that I almost fell asleep in class