What are compound and complex sentences?

compound: a sentence with more than one subject

complex: a sentence containing a subordinate clause or clauses.

Simple sentence has one clause.

Compound sentence has two or more clauses.

Complex sentence has one independent clause and one dependent clause.

Examples:

Compound

We like pasta, and we like pizza.

Complex

The girls did not go to the park because they went to the zoo.

* Tip *

In compound sentences look for conjunctions Conjunctions : and, but, so, yet In complex sentences look for subordinating conjunctions Subordinating conjunctions : before, because, unless