Hi Natalia, The link below explains thendidpfference pretty well. http://dictionary.cambridge.org/us/grammar/british-grammar/such-or-so Such is a determiner; so is an adverb. They often have the same meaning of ‘very’ or ‘to this degree’: Those are such good chocolates. Those chocolates are so good. We use such + noun phrase and so + adjective or adverb phrase: hooe this is helpful. Paul

Usually they are interchangeable for meaning but the sentence structure would be different for each. He is such a bore - has the same meaning as - He is so boring He is such a nice person - or - He is so nice Although (quirk of English?) it's not consistent as you may say I had such a good time at the party - I can't think how you would use 'so' in this instance without changing things more to I had so much fun at the party I hope this helps rather than making it more confusing Do you have any sentences that you would like to share using such and so?

we usually use "so" with an adjective, and "such" or "such a" with a noun