If you eat less than you should, you'll probably get anemia.
My sister has more shirts in her wardrobe than me.
I got fewer calls from my relatives on my birthday than I got last Christmas.
You need to add more information to your essay if you want to score a higher grade.
I bought more rice than I needed, and now I don't know what to do with it.
Sometimes I sleep more than I should and I end up getting late to work.
I need to spend less money if I want to have enough to buy concert tickets.
Last night I drank more coffee cups than I expected.
You need to talk less, you almost told everyone your secrets!