So + adjective / adverb

So intensifies adjectives and adverbs. It can be followed by a result clause with that.

PatternExample
so + adjective The film was so boring. · It was so cold outside.
so + adjective + that It was so hot that we stayed inside all day.
so + adverb She spoke so quickly that I couldn't understand her.
so + adjective (exclamation) "The view is so beautiful!"

Such + (adjective +) noun

Such intensifies nouns (often with an adjective before them). Use a/an with singular countable nouns.

PatternExample
such a/an + (adj) + singular noun She's such a good teacher. · What such a surprise!
such + (adj) + plural noun They were such good friends. · These are such difficult questions.
such + (adj) + uncountable noun It was such terrible weather. · He has such patience.
such + noun + that She's such a good teacher that everyone loves her class.
so vs such: So + adjective alone: "It was so hot." Such + noun (+ adjective): "It was such hot weather." ✗ "It was so hot weather." ✗ "It was such hot."

So much / many / little / few

FormUseExample
so much + uncountable large amount (uncountable noun) There was so much noise that I couldn't sleep.
so many + plural countable large number (countable noun) There were so many people that we couldn't get in.
so little + uncountable small amount (uncountable) There was so little time that we had to rush.
so few + plural countable small number (countable) There were so few tickets left that we missed out.

Exercises

Choose so or such (with the correct article where needed).

1. It was ___ a boring film that I fell asleep.

2. She spoke ___ fast that I couldn't understand a word.

3. It was ___ cold weather that the pipes froze.

4. There was ___ little food that we had to share one plate.

5. She's ___ an experienced teacher that students travel far to attend her class.