Hedrops inon me quite often. Here the underlined phrase is a/an -

• He drops in on me quite often. Here the underlined phrase is a - Phrasal verb.
• Phrasal Verb:
- বাক্যে Verb + preposition/adverb থাকলে সেটা Phrasal Verb হয়।
- যেমন - look down upon, give up, look after.
- প্রদত্ত প্রশ্নে drops in (verb + preposition) হচ্ছে Phrasal verb.
- এর অর্থ make a casual or informal visit to a person or place.