It wouldn't be a * foutieve beknopte bijzin, want het onderwerp in de bijzin is het zelfde als in de hoofdzin ("ik", impliciet), en je hebt ook niet te maken met het geval waar je een werkwoord verandert door er een speciale bijwoordelijke bepaling bij te zetten (namelijk een stiekem voorzetselvoorwerp), zoals in "ik sloeg hem bond en blauw en in de boeien".
I never really got that bacon thing... Sure, it's nice, but I liked pork chops or spare ribs better.
I say 'liked' because I've been a vegetarian for almost 17 years now, so I'd rather sit on the couch and have a bag of chips/crisps (really, nothing beats a bag of chips/crisps when sitting on a couch!)
Unfortunately I'm trying to lose weight/fat and I'm just sitting there hungry
Both are perfectly correct, but normally pronouns are omitted when understood because it can sound redundant.
So while "I sat on the couch and I was hungry" is fine, it often doesn't sound good to repeat pronouns that way, so most people will just say "I sat on the couch and was hungry."
Otherwise you end up with sentences like "I sat on the couch and I was hungry, so I ate some leftovers from when I had dinner last night." It sounds better to say "I sat on the couch and was hungry, so I ate some leftovers from dinner last night."
You have to be careful with ambiguity though, for instance:
"I sat on the couch, my dog joined me, and the hunger grew."
Are you hungry? Is the dog hungry? Are you both hungry? A pronoun would help there.
They are both grammatically correct. From a style standpoint, the sentence combines (seemingly) unrelated ideas. That is, it begs more questions than it answers. Did the couch make you hungry? The the act of sitting make you hungry? When editing I would suggest something like:
As I sat on the couch, I realized that I was hungry.
One of the neat things about English for non-native speakers is that sentences can be formed in at least three ways:
I took my brown dog for a walk.
My brown dog I took for a walk.
I took for a walk, my brown dog.
I took my brown dog for a walk?
Although some are more awkward, they are all correct.
They are both correct. The first however gives a sense that the sitting on the couch helped you feel hungry. The second lists two separate things and ideally should be separated by a comma.
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