What is a sentence?

"A sentence is a unit of language charecterized in most languages by the presence of a finite verb" (wikipedia). Sentences are classified two ways: according to their structure (simple, compuond, complex, and compound-complex) and according to their purpose (declaritive, imperative, interrogative, and exclamatory) (Hacker 463). The basic unit in writing is the sentence.

Structure

Simple sentence: A Simple sentence is one independent clause with no subordinate clauses ( Hacker 464). "I am not very good a writing essays."

Compound sentence: A compound sentence is composed of two or more independent clauses with no subordinate clauses. The independent clauses are usually joined with a comma and a coordinating conjunction (and, but , or, not, for, so, yet) or with a semicolon (Hacker 464). "The girl ran fast, though her classmates were gaining on her."

Complex sentence: A complex sentence is composed of one independent clause with one or more subordinate clauses (Hacker 464).

Compound-complex sentence:A compound-complex sentence contains at least two independent clauses and at least one subordinate clause (Hacker 464).

Purpose

There are four major patterns that function in a sentence.

Declaritive sentences make statements (Hacker 465)."The weather is nice today."
Imperative sentences issue requests or commands (hacker 465). "Go to the store."
Interrogative sentences ask questions (Hacker 465). "What time is it anyways?"
Exclamatory sentences make exclamations (Hacker 465). "What a fun ride"!

How to make a sentence

A sentence should have a subject and a verb.
The first word should always be a capital letter.
Sentences must end with a period, question mark, or an exclamation point.
Sentences must be a complete thought.
A sentence can be either positive or negative in function.

Usage

Subject and verb

The subject is what or whom the sentence is about. The verb tells what the subject of the sentence does. It tells the action.

To determine the subject of a sentence, first isolate the verb and then make a question by placing who? or what? before it. The answer is the subject(Peck).

Sentences should have a predicate that says something about the verb.

Capital letter

A capital letter is placed at the begining of a sentence to show authority and to mark the begining.

We are starting class at one.

Punctuation

Periods are used to mark the end of a sentence expressing a statment (Darling).

It is a nice day today.

Question marks are used at the end of a direct question or to show that something is uncertain (Darling).

What time does the store close?

Exclamation points are used after an exclamation of surprise, shock or dismay, which is generally a short sentence or phrase expressing very strong feeling (Darling).

The pool party was great!

What a ride!