When they had made themselves comfortable, a stranger appeared looking very angry.
May you help me why it uses looking in the sentence?
- Why not use 'looked'?
- How to comprehend the word 'looking'?
When they had made themselves comfortable, a stranger appeared looking very angry.
May you help me why it uses looking in the sentence?
In the cited example, looking very angry is a participle clause - a type of adverbial clause based on a continuous (-ing) or past tense (-ed) verb form.
That link above gives the following useful example of the difference between a present participle (-ing) form and a past participle (-ed) form...
1: Shouting loudly, Peter walked home. [Peter was shouting]
2: Shouted at loudly, Peter walked home. [Someone was shouting at Peter]
...where in example #2 the participial verb is passive. But I can't see any way to "passivize" OP's exact example using the past participle looked. It just doesn't work. But I can offer this contrasting pair if it helps...
3: The stranger sat down, watching closely [The stranger was the one paying attention]
4: The stranger sat down, watched closely [Unnamed others were watching the stranger]