Used in sentences in which there is information that is in some way surprising or the opposite of what most people would expect. A synonym of "really" or "in fact"

Used to change the subject in a conversation.

As you would expect, a synonym of "obviously"

Said right before giving news or something exciting or surprising.

Said when there's more than one way to say something

You say this before making a statement or give a strong order. A synonym of "only" or "simply"

Used when saying something that is almost the opposite of what you have just said, or that explains or emphasizes it

Said to admit something.

Used to say what appears to be true.