COMPOUND COMPLEX SENTENCE

A compound-complex sentence combines the compound and the complex sentence. The 'compound' part means that it has two or more complete sentences. The 'complex' part means that it has at least one incomplete sentence.

A compound-complex sentence is a sentence havingtwo or more coordinate independent clauses and one ormore dependent clauses, as The lightning flashed(independent clause) and the rain fell (independentclause) as he entered the house (dependent clause).

Example

1.      Jim’s mom went to the store because it’s his birthday, and she bought him a present

Explanation:

The independent clauses “Jim’s mom went to the store” and “she bought him a present” form a compound sentence with the connection of the coordinating conjunction “and.” The first part of the sentence, “Jim’s mom went to the store because it’s his birthday,” forms the complex sentence. You have an independent clause, “Jim’s mom went to the store,” and the dependent clause, “because it’s his birthday,” which does not complete a thought.

2.      Until he graduates, he will live in the apartment, but then he wants to move.

Explanation:

The independent clauses “he will live in the apartment” and “then he wants to move” have the connection of the coordinating conjunction “but.” This forms the compound sentence. The dependent clause, “Until he graduates,” when combined with the independent clause, “he will live in the apartment,” makes up the complex part of the sentence.

3.      Molly, who loves cats, plans to get a kitten, but she needs to find a house.

Explanation:

In another type of example, “Molly, who loves cats, plans to get a kitten” makes up the complex sentence because of the independent clause “Molly plans to get a kitten,” which is broken up by the dependent clause “who loves cats.” The combination of the two independent clauses “Molly plans to get a kitten” and “she needs to find a house,” connected by the coordinating conjunction “but,” makes up the compound sentence.

4.      Jennifer sat in her chair, which was a dark red recliner, and she read all evening.

Explanation:

This sentence shows the compound sentences of the two independent clauses “Jennifer sat in her chair” and “she read all evening,” combined by the coordinating conjunction “and.” The complex sentence stems from the independent clause “Jennifer sat in her chair,” and the dependent clause “which was a dark red recliner.

Reference

http://classroom.synonym.com/examples-compoundcomplex-sentence-3561.html