Identify words with common prefixes. [1:24]

Watch videos, slideshows, or read articles with grammar lessons designed for English language learners.

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...

This Skillswise site focuses on varieties of English. Included are a video about why learning different varieties of English is important, fact sheets and worksheets for instruction, quizzes on the information presented, and games to...

This video lesson from Yossarian the Grammarian explains how to deternine the appropriate pronoun case in a sentence.

This is a YouTube video lesson about adjective. Adjectives modify nouns and answer the questions: Which? What kind of? or How many?

This YouTube video lesson defines adverbs, tells how to find them, and how they are used in sentences.

This is a YouTube video lesson concerning what a verb really is in a sentence. He defines it as a word with a subject.

This animation features the concept of volume and how to perform the calculation. 2:37sec.

Students can listen to a video interview [4:33] with a native Spanish speaker. This interview, conducted in Spanish, explains the challenges associated with language barriers. Specifically, learning English, improving pronunciation and...

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.

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.

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.

Much has been made of the distinction between 'that' and 'which' in English, but it can mostly be summed up in two points: 1. 'That' doesn't work so well with commas. 2. 'Which' doesn't work so well with people. David the Grammarian...

The difference between something being singular or plural is what we call 'grammatical number' in English. Here's how that idea applies to pronouns!

Video tutorial demonstrates how to make sure that your pronouns and antecedents match up with one another or agree. [4:06]

FANBOYS' is a mnemonic device you can use to help remember the coordinating conjunctions of English. Team Grammar made this video, figuring that we couldn't very well cover conjunctions without writing a song, now could we? If you're...

A video [4:52] explaining how correctly written sentences have subjects and verbs that agree.

A video [4:37] explaining the common sentence errors of run-ons and comma splices. L.11-12.3a Syntax