Review the lesson on co-ordinate conjunctions and notice which
conjunctions are used to unite principal clauses into single sentences.
Use these co-ordinate conjunctions to unite the following pairs of
simple sentences into compound sentences. For example:
The sun rises _and_ the day dawns.
The men work _but_ the boys play.
The sun rises. The day dawns.
He studies diligently. He learns rapidly.
He came early. He could not stay.
The weather is cold. The plants are not growing.
The men work. The boys play.
The day is cold. The wind is blowing.
Take the above sentences and use subordinate instead of co-ordinate
conjunctions, and make complex sentences instead of compound out of each
pair of simple sentences. For example:
_When_ the sun rises, the day dawns.
The men work _while_ the boys play.