With ESO you can get helpful English grammar tips in our pre-recorded videos, available to watch online, or download. Using the correct grammar is essential when speaking English as a second language. Grammatical errors can actually change the meaning of what you are saying, and certainly undermines your credibility as an English speaker. It is especially important in business, legal or academic environments where you will need to consistently demonstrate a high standard of English communication.You can test your English online with English Study Online. Our quizzes on grammar, vocabulary and more, will put your English skills to the test and show you which areas you need to work on.