Adjectives are the words we use to modify nouns. David explains how, with the help of a bear.

Adverbs are a kind of modifier that you can use to change verbs or adjectives, like 'very' or 'carefully'.

Articles—words like the, a, and an—are special adjectives we use to indicate whether a noun is specific or not specific.

Irony, puns, and sarcasm are some of the toughest concepts in English. This video attempts to explain all three.

Some nouns look the same whether they're singular or plural – these nouns are called "base plurals", and we'll demonstrate how they behave the only way I know how... by using sheep!

You don't need to know how to speak Latin and Greek in order to understand English, but some words in English come from those languages. It's helpful to know how some Greek and Latin words change from singular to plural.

The plural of "dog" is "dogs", but what is the plural of "leaf"? Khan Academy's resident grammarian explains.

English has seven words that behave very strangely when you change them from the singular to the plural. These are called THE MUTANT PLURALS of English. They're super cool.

The plural of "whale" is "whales", but what's the plural of "child"? David, Khan Academy's resident grammarian, explains.

“It’s All Greek to Me!” has everything—entertaining stories, academic articles in a variety of disciplines, vocabulary crossover in literary and academic readings, connections to local, American, and Western culture, and plenty of chances for critical thinking for advanced students of English as a Second Language (ESL). All readings are authentic with minimal adaptation from a variety of sources.

This textbook also gives help for advanced level grammar and writing issues, using outside sources, and reading and vocabulary strategies.

How do you know when to use "less" and "fewer" when describing things?

KA grammarian Paige introduces an important piece of punctuation that helps link items in a sentence: the colon!

In a previous video, we established that one thing verbs can do is show actions, like "the bear runs." Verbs can also link ideas to one another, like "the bear looks cheerful.".

Created for Washtenaw Community College's low intermediate ESL students, this OER writing textbook covers writing sentences, summaries, opinions, and narratives, as well as improving spelling and grammar.

David and Paige introduce you to the superhero of the punctuation world: the comma!

There's a class of helper verbs known as modals that we use to express a bunch of conditions: we can use them to give advice, make guesses at how necessary or likely something is, make requests of people, and so on. They're super useful.

David and Paige, KA’s resident grammarians, discuss tag questions, yes and no statements, and direct address -- all situations where the comma is super useful.