so and such both mean "so / such," used to intensify the tone:
- so + adjective / adverb: so hot, so quickly.
- such + (a/an) + (adjective) + noun: such a hot day.
(冠词)The 电影film (是)was 如此so 无聊boring.
That movie was so boring.
(这)It 是was 如此such 一个a 好good 主意idea.
That was really such a good idea.
Note Follow so with an adjective (so good); follow such with a noun phrase (such a good idea).
Common Errors
- ❌ To praise "very happy" but say ~~I'm too happy!~~ → ✓ I'm so happy! — too carries a negative connotation ("excessively, to the point of being bad"); use so for praise and exclamation.
- ❌ ~~The box is too much heavy.~~ → ✓ The box is much too heavy. — To intensify too, use much too; the word order is much first.
- ❌ ~~The tea is too hot to drink it.~~ → ✓ The tea is too hot to drink. — In the too…to structure, the sentence subject serves as the object of drink, so do not write it.
- ❌ ~~It was so a good idea.~~ → ✓ It was such a good idea. / The idea was so good. — If there is a noun, switch to such.