Student or Learner
Is it grammatically correct to use adverbs in sentences like
'he has detected it quickly'
'he has briefly described his plans'
'I saw a man quickly walking towards the house'?
Thank you in advance.
But the first two would be unnatural if you were really only referring to the ordinary preterite context and aspect. For that, I'd prefer....
He detected it quickly.
He briefly described his plans.
There are probably some situations where your original versions might be natural, however. I just can't think of them at the moment.