2016-04-07

Question 1

You can use にto indicate the occasion on which you do something.
I ate salad at dinner.

Answer 1

晩御飯にサラダを食べました。

Question 2

にcan also indicate the role you want sth to play.

I bought a postcard as a souvenir.

Answer 2

おみやげにはがきを買いました。