Japanese notes (full)

の substituting for a noun

A noun can be left out of a sentence where it can be implied.

あれは だれの かばんですか。Whose bag is that?
…わたしのですIt's mine.

Demonstratives

close to the speakernear the other person or not farfar from the speaker/listenerquestion
Thingこれそれあれどれ
Thing/Personこの Nその Nあの Nどの N
Placeここそこあそこどこ
Direction (or polite Place)こちらそちらあちらどちら

〜も and 〜か

何も means nothing (or anything), 何か means something. 何も 食べません = "I'm not going to eat anything."