This textbook covers grammar and style conventions for students who will write academic papers at the college level. It is a synthesis of multiple textbooks and it contains videos and short quizzes on the content. This textbook is used in English Composition courses at Central New Mexico Community College.

There's this idea in grammar called grammatical person that helps describe who's being talked about in a sentence. David, KA's Grammar Fellow, explains.

Learn to tell when to use "hear" instead of "here" and vice versa; you'll learn how to do the same with "accept" and "except".

We've established that verbs can show actions and link ideas together. Now, let's talk about how some verbs can be used to help other verbs.

In this guide, you will find information about the most important tips that both students and instructors can use to improve writing skills in English for ESL students.

David, Khan Academy's Grammar Fellow, covers three nifty features of indefinite pronouns, which are pronouns that are just a little vague, y'know?

Words like 'very' and 'slightly' are examples of intensifiers and adverbs of degree. Here's how they work!

Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language, its rules, and its conventions. By understanding English – by speaking it, by writing it, by reading this very sentence – you are a grammarian yourself!

When you match up the subject of a sentence with a verb, it's called 'agreement'. Here's how it works!

Apostrophes are great at standing in for missing letters, allowing us to shorten words. Paige and David discuss contractions and the Principle of Least Effort.

Words like "walk" and "look" are regular verbs – they behave in a predictable way. But there's a whole class of words in English, called irregular verbs, that are harder to predict. David, KA's Grammar Fellow, explains.

A noun is a word that describes a person, place, thing, or idea. Examples of nouns include names, locations, objects in the physical world, or objects and concepts that do not exist in the physical world; for example, a dream or a theory.

David and Paige, KA’s resident grammarians, introduce a new piece of punctuation: the apostrophe!

Apostrophes can help show when something belongs to someone. Paige and David explain how!

Paige introduces a piece of punctuation called the semicolon; this punctuation can link closely related independent clauses together in a sentence. Created by David Rheinstrom.

If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Created by David Rheinstrom.

Let's explore what verbs are, and what they do! David, KA's Grammar Fellow, explains.

An understanding of verb tense will make you into a TIME WIZARD, with the ability to control the past, the present, and the future – with your words, anyway.