Question

The boy is absent today. We are talking about the boy.
change into adjective clause to make one sentence

Answer 1

Adjective clauses are generally defined as the clauses that acts as an adjective in a given sentence usually defining a noun.

Given sentences :

The boy is absent today. We are talking about the boy.

After joining the sentences using an adjective clause, the sentence will be as follows:

We are talking about the boy, who is absent today.

Here, " who is absent today " is the adjective clause.