The ancient wyvern claws you for 8 damage

You stab the gigantic rat for 4 damage

Ancient wyvern clawed you for 8 damage

You stabbed gigantic rat for 4 damage

You were hit for 8 hit points

Gigantic rat was hit for 4 hit points

It looks pretty good.I would slightly change the semantics of the action messages. For example:I would change tobut in my opinion this would be even better:Someone who is better at english can tell you whether this is a bad suggestion or give a better explanation of why some changes would make the messages more natural sounding.