Define:

. Simple sentence
. Compound sentence
. Complex sentence
. Compound-complex sentence.

Make it all easy to understand

- Simple sentence: A simple sentence is a sentence that contains one independent clause and expresses a complete thought. It typically consists of a subject and a verb.

Example: She is reading a book.

- Compound sentence: A compound sentence is a sentence that contains two or more independent clauses joined by a coordinating conjunction or a semicolon.

Example: She is reading a book, and he is watching TV.

- Complex sentence: A complex sentence is a sentence that contains one independent clause and at least one dependent clause. A dependent clause cannot stand alone as a complete sentence.

Example: While she is reading a book, he is watching TV.

- Compound-complex sentence: A compound-complex sentence is a sentence that contains two or more independent clauses and at least one dependent clause.

Example: While she is reading a book, he is watching TV, and they are both enjoying their time together.