Yeah sure, this comes up all the time. 會 - can (a skill that has been learned), it can also mean "will" and "would" 可以 - permission has been given by others. The best translation is "may" 能 - The circumstances deem it possible. 很可能 it's very possible that 能不能___ Is it possible to____ 例句：我會中文 - I can speak Chinese - I have learned this skill as a foreigner 我會唱歌兒 - I can sing - I learned this skill 我會跳舞 - I can dance - I learned this skill 我會說普通話，可是不會說廣東話 - I can speak Mandarin, but I can't speak Cantonese (I learnt Mandarin, but haven't learnt Cantonese) 我不會玩麻將 - I can't play Mahjong (Haven't learnt yet) 我不會下棋 - I can't play chess (Haven't learn't yet) 我可以去厠所一下嗎？May I pop to the toilet? 我可不可以跟你練習我的中文？May I practise my Chinese with you? 大家現在可以進去了！You may all enter now! 你可以幫我忙嗎？Can you help me out? 我喜歡能去沙灘的機會，因為在我們這邊兒能去沙灘的機會不多啊！ I like it when I can go to the beach because over here we don't exactly have many opportunities to go 你能喝九瓶酒嗎？ Can you (really) drink 9 bottles of beer? 你能幫我忙嗎？Can you help me out? 你不能在這兒抽煙！You are not allowed to smoke in here 只有成年人才能開車 - Only adults are allowed to drive (permitted by the law/circumstances) Laurence

Both W. Rich and Laurence have given good answers. The only thing I would like to add is that 可以 may have the following additional meanings relating to "can": A. "entirely conceivable; entirely possible". Examples: 这个过失的后果可以很严重的。 This mistake can have serious consequences. 独身可以很快乐的。 One can be very happy being single. 伦敦的酒店可以很贵的。 Hotels in London can be very expensive. B. you may wish to try … ; my advice is … Examples: 你可以问你爸拿钱。 You can try asking your Dad for money. 你可以不理他。 You can just ignore him. C. being able to Example: 我三点没空。你可以四点才过来么？ I am not free at 3 pm. Could you come at 4 instead?

可以 means more like, 'am I allowed to do something?', you need permission, doesn't matter if you physically 'can' do it, you still need to ask, like when asking to leave the classroom you would use this.. 会, means you know how to, like wo hui shuo yingwen, I have learned the ability to speak english so I use 会. 能, very similar to 会, and can be used in similar situations, but you use it when it refers to your ability or inability to do something. 不能 meaning something is impossible. Hope it makes sense!

可以 it is used to state ok to do something. be allowed to something.我可以看懂中文。I can read Chinese你明天来吗？可以 Are you coming tomorrow? yes , I do.(ok) 能 is generally used to say having ability to do something. 我 能看懂中文。I am able to read Chinese. 我不能来。I am unable to come. 会，usually means can. 我会电脑。I can operate computers. 我不会来，I won't come(I am able to come). If I say I can't come in rejoinder it means 我不能来。(我不可以来。)if I say 我不会来， it means I have ability to come but I just don't want to come. I just don't know how to clarify it but based on context meaning hope that helps. https://www.youtube.com/watch?v=beCC2m2hZtI This video may help.