Now I'll try to answer your question:
"I didn't know that water boils at 100º Celsius." I know that water boils but did not know at what temperature.
"I didn't know there are stars in the sky." Here I'm not sure that I'm right...More likely that - I see something in the sky but did not know these are stars.
Let me know please if something wrong or there's a better explanation there.
Last edited by greegorush; 28-Apr-2009 at 07:52.