Question

I met my old friend.
he is now an officer.
(combine the sentence using adverbial clause)

Answer 1

I met my old friend and he is now an officer.

Answer 2

When I met my old friend, he was an officer.

• Adverbial clauses can be of many types such as time, place, condition, reason, contrast, manner and degree of comparison.
• In this case, we have used 'adverbial clause of time' as it indicates a point of time.
• Other examples:

1. She studied hard so that she could get a good job ( Adverb clause of reason or purpose).
2. Although she was highly qualified, she failed to get a good job( Adverb clause of contrast).