Generally, I think ought is mainly used in these cases: -when you say what is the right thing to do. Ex: They ought to have apologized her for their bad behavior=They should have apologize her but they didn't -when you say what you expect and would like to happen. Ex: Children ought to be able to read by the age of 7=>you expect them to be able to read be the age of 7 -when you say what you advise or recommend.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.