"He sleeps while I cook."

Translation: Ele dorme enquanto eu cozinho.

[Jackie-da-China]

what's the difference between"quanto"and"enquanto"?

[Paulenrique]

Enquanto = while, whilst (something happening in the middle of another action or to show contrast - enquanto eu estava ecrevendo ela se foi / meu chapéu é cinza enquanto o seu é preto). Quanto = how much. These are the main meanings. Depending on the context they may have others.

[Jackie-da-China]

yes,I understand what you writed,,,,,plus,Can I say"ele dorme quanto eu cozinho"?

[Paulenrique]

No. We use just "enquanto", or maybe "quando". Use quanto as "how much" or "as" for comparasion: sou tão forte quanto ele = im as strong as him.

[Jackie-da-China]

ah,I get it fully

[barbaratorrance]

to sleep is dormer,why do you say eu durmo and not eu dormo?

[Paulenrique]

verb conjugation. They have irregularities.