When placed at the start of a thought, a discourse marker is usually a reaction toward the other speaker.
What I need to do is milk is the yak.
One should keep in mind that some verbs can be transitive or intransitive, with different meanings, e.
The intransitive verbs that can be used with this are verbs whose meanings have to do with existence exist, live, occur, appear, happen, prevail, remain and change of state disappear, vanish, arrive, die, come, arise.
He must rest, because he is ill.
The more common connectors and, so, but, or actually provide relatively weak foregrounding, while many others have more specific meanings and provide stronger foregrounding.
The elements connected by discourse markers are diverse.
As a result- The guest arrived late.