If you are using it as a character in a sentence who is talking it can work. For example " beware! For what happened on that island will haunt you forever!"
Beware the telephonist in the corner...
Pardon me, but I recommend that you beware of this repair shop.
Beware the missile's trajectory.
Beware the javelina. There's a javelina in our bathtub!
Beware; our foe has unsheathed his battle sword.
Beware that you do not fall a prey to the highwaymen who stalk these roads.
10 example of compound sentence
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The story of the Trojan Horse resulted in the admonition to beware of Greeks bearing gifts.
Beware of lightning!
having a sting or the capacity to sting; "stinging insects"; "stinging nettles"
Beware the surge! I was uprepared for the crowd's forward surge.