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:

KINDS OF COMPOUND SENTENCES

453. Compound sentences may be made up of two simple sentences.

Rewrite the following compound sentences, making of each sentence two simple sentences:

454. A compound sentence may be made up of a simple sentence and a complex sentence, joined by a co-ordinate conjunction. For example:

This compound sentence is made up of the simple sentence, John goes to school, and the complex sentence, Mary stays at home in orderthat she may help her mother.

455. Both parts of the compound sentence may be complex; that is, both principal clauses in a compound sentence may contain dependent clauses. For example: