Conversational Phrases/O

You can add this if what you're saying should be obvious to the listener.

You can answer a question with this if you want to say "no" very definitely or forcefully.

You can answer a question with this if you want to say "yes" very definitely or forcefully.

You can say this if you suddenly understand or realize something.

You can say this if something bad happens or you hear bad news.

You can say this if you're disappointed.

You can use this to add emphasis to a question, esp. if you're surprised or annnoyed.

You can say this if you've suddenly changed your mind.

You can use this to say something must be true, because if it wasn't true something else would or wouldn't have happened.

If you add "or else!" to a command or a demand, it becomes an implied threat.

You can add this to a question if you're getting impatient or frustrated.

You can say this if someone's refusing to tell you something you want to know.

You can say this if you strongly oppose a plan or an action, and you're not going to let it happen.