Blind Spots: Hidden Dangers on our roads Deadly crashes. Dangerous carriers. A broken system letting them stay on the road.

Understanding the Context

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Key Insights

Act now! Canva is a free-to-use online graphic design tool. Use it to create social media posts, presentations, posters, videos, logos and more. Can is usually used in standard spoken English when asking for permission. It is acceptable in most forms of written English, although in very formal writing, such as official instructions, may is often used instead: Persons under 14 unaccompanied by an adult may not enter.

Final Thoughts

The use of can to ask or grant permission has been common since the 19th century and is well established, although some feel may is more appropriate in formal contexts. May is relatively rare in negative constructions (mayn't is not common); cannot and can't are usual in such contexts. Learn how to use CAN and CAN'T (CANNOT) in this English grammar lesson for beginners. We use can and can't to talk about ability, possibility, make requests, and ask for permission.