Even advanced English learners, despite years of practice and exposure, continue to make certain common grammar errors. These mistakes often appear in writing and speech and can affect clarity, ...

Check and improve your grammar with our basic grammar reference guide. On this page you'll find links to our basic grammar summary pages. Each basic grammar reference page covers a key grammar point ...

Duolingo announced on Wednesday that it’s offering advanced language learning content for free across nine languages: English, Spanish, French, German, Italian, Portuguese, Japanese, Korean, and ...