Chord question.

[musicmaker18]

One day at my music theory lesson, I brought a composition I had made and we analyzed it.  My teacher made some suggestions such as an A sharp here, a G minor here, etc.  My question is, how do you know what chords can fit in a specific part of a song?

BTW the song I composed was in the key of B.

[dj]

well gee i guess that would depend on what kind of song you are writing....there are all kinds of borrowed chords, chord inversions, and whatnot that can be used to achieve different effects....if you get into some modern music, it's hard to even tell where they get some of their chords! so i guess if you wanna get better at knowing which chords will achieve the effect you want, just study how all the different chords are related, ask your teacher about some theory study and try to analyze different pieces to see what chords various composers have used.

[dj]

lol sorry, i read your post again and it appears you are already taking theory lessons, so then scratch my suggestion about asking for some theory studies