Hey there! I had so many problems. This car is so beautiful. I've said it so many times. 'Such' is used only with nouns, e.g. She is wearing such a beautiful dress! 'So' is used in all other cases.

Hello there, In your examples “so” is the correct answer because: • After “so” we can have an “adjective” or an “adverb”; for example, the exam is so easy(adj), he drives so fast(adv). • After “such a/an” or “such” we need a noun phrase; for example, it is such a beautiful house (a beautiful house is a noun phrase, meaning it has an article((a)), an adjective ((beautiful)) and a noun ((house))) Remember “such a/an” is used before singular countable nouns, but “such” is used before plural or uncountable nouns; for example, there are such good teachers on italki that help you learn English so fast! (Teachers = plural); using such furniture is commonly seen in this country (furniture = uncountable noun).

Annie! Your comment was better!

Thank everyone so much for your help! I wish you prosperity!

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: She is such a great cook. Not: She is so great cook. That was so unpleasant. (so + adjective) Not: That was such unpleasant. Why do you drive so fast? (so + adverb) Not: Why do you drive such fast? So but not such can also be used in front of much, many, little, few to add emphasis: So much food was wasted every day. Not: Such much food was wasted … In those days there were so few doctors in our area. Not: … there were such few doctors …