- parents and children having different tastes in music

- parents' strong opinions about everything related to their children

- children's objection to the way their parents treat them like small kids

- parents' objection to their children's clothes

- parents' expectations of their children's better use of free time

- parents' strong views about their children's education and future jobs

- parents and children having different beliefs

- Complaints

I don't like the way my parents keep + V-ing .....

My parents are always + V-ing....

My parents believe that....

- Giving opinions and advice

I think you should / ought to....

I don't think you should / ought to.....

In my opinion, you should / shouldn't

If I were you, I would / wouldn't.....

You'd better.....

You shouldn't / ought not to...

Why don't you....?