Question

he must work very hard to make up for the lost time change into compound sentence

Answer 1

He must work very hard for the time he has lost

Answer 2

A sentence which contains two independent clauses with related ideas is referred to as a compound sentence.

One way to punctuate a compound sentence correctly is to join the two independent clauses with a semicolon and a coordinating conjunction.

Semicolons are used to connect ideas related closely. Further, it is used to join two independent clauses.

For example:

Some people prefer to capture moments in camera; other prefer to observe and feel the moment.

Coordinating conjunctions are the words which connect clauses and phrases. There are seven coordinating conjunctions that are, yet, so, or, for, and, nor, and but.

For example:

The boy refused to complete the homework nor will he take the punishment.

Therefore, the above sentence when converted into compound sentence through coordination conjunction, it would be written as:

He must work hard and make up for the lost time.