Helping the poor is a great virtue. Here the underlined part is a/an -

• Helping the poor is a great virtue. Here the underlined part is a - Gerundial Phrase.• Gerundial Phrase: Verb+ing + Extension যদি Noun (Subject/ Object) এর কাজ করে তবে তাকে Gerundial Phrase বলে।যেমন:- Walking in the morning is good for health.- Helping the poor is a great virtue.- Stop telling lies. - Cycling on the hill tracks is not easy.• এখানে, 'Helping the poor' phrase টি বাক্যের subject বা noun এর কাজ করছে তাই এটি Gerundial Phrase.