'The old man was tired of walking'. Here 'walking' is a/an-

Preposition 'of'-এর object হিসেবে verb + ing যুক্ত 'walking' বসেছে। Verb + ing যখন noun-এর কাজ করে, তখন তাকে Gerund বলে।

Gerund-এর ব্যবহার:

• Subject: Swimming is a good exercise.
• Object of transitive verb: Stop writing.
• Object of preposition: I am fond of catching fish.
• By + Gerund: By eating a balanced diet, you can live well.
• Without + Gerund: Without working hard, you cannot succeed.