Say it in a different way. 1) i don*t know anybody here . 2) i don*t think anybody can help us. 3) i can*t see anything behind the window .4) we don*t understand anything behind the window .5) they couldn*t buy anything in the supermarket .6) we haven*t got any money .7) don*t ask anybody to help you.8) he doesn*t like anything on the menu.

1) I know nobody here
2) I think nobody can help us
3) I can see nothing behind the window
4) We understand nothing behind the window
5) They could buy nothing in the supermarket
6) We have got no money .
7) Ask nobody to help you 
8) He like nothing on the menu