Use internet?

hi dear friends.

first i apologize because of my English.

my wd is now connected to my laptop with network cable and i can share my pc and works fine.

on the other hand my lap top connect to internet via wifi of my external modem.

and because of some reason i dont want to connect my wireless modem directly to my wd .

i just want to know that in this situation can i share that internet to my wd.?? in fact can my wd connect to internet via cable network come form laptop which connect its wifi into wireless modem.?