YOU SAID:

I've been sleeping a thousand years it seems

INTO JAPANESE

千年も眠っていたようだ

BACK INTO ENGLISH

seems to have slept for a thousand years

INTO JAPANESE

千年も眠っていたらしい

BACK INTO ENGLISH

It seems that I have been asleep for a thousand years

INTO JAPANESE

千年も眠っていたみたいだ

BACK INTO ENGLISH

It's like I've been asleep for a thousand years

INTO JAPANESE

まるで千年も眠っていたみたいだ

BACK INTO ENGLISH

It's like I've been asleep for a thousand years