ESL Web Directory

There are hundreds of ESL quizzes here and the page is updated regularly. When you have taken a quiz, you can get graded and find out how many you answered correctly. The quizzes use Multiple Choice and True & False formats.

A dictionary of English phrasal verbs with definitions and examples. It also contains other information, such as whether the verb is separable or inseparable, whether it is only used in American, British or other varieties of English. There are also many quizzes that can be taken to test your knowledge of verbs, particles and prepositions, etc. It is updated very frequently.

I think this is a brilliant site and use it most days. You can search the entire British National Corpus in seconds, with an interface that is easy to use and allows you to do very advanced searches for genuine examples of English usage.

This site gives the etymology, the origin, of thousands of words used in English, tracing the changes made over the centuries as a word moves from other languages into English or tracking its changes in English over time.

A basic list of a few hundred American slang expressions. It is written in basic HTML so it will load quickly on narrowband connections.