+453.+ +Compound sentences may be made up of two simple sentences.+
Rewrite the following compound sentences, making of each sentence two
simple sentences:
The birds are singing and spring is here.
He believes in war but his brother is against it.
We must arouse ourselves or we shall be involved.
He will not study nor will he allow any one else to study.
+454.+ +A compound sentence may be made up of a simple sentence and a
complex sentence, joined by a co-ordinate conjunction.+ For example:
John goes to school, but Mary stays at home in order that she may help
her mother.
This compound sentence is made up of the simple sentence, _John goes to
school_, and the complex sentence, _Mary stays at home in order that 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:
John goes to school where his brother goes, but Mary stays at home in
order that she may help her mother.
This compound sentence is made up of two complex sentences. The
sentence, _John goes to school where his brother goes_, is complex
because it contains the dependent clause, _where his brother goes_; the
sentence, _Mary stays at home in order that she may help her mother_, is
complex because it contains the dependent clause, _in order that she may
help her mother_.