SO-SUCH

·SO: Emphasizes an adjective, an adverb or a noun.                                             (SO+ADJETIVE/ADVERB).

When we use so in a rephrasing (connecting two sentences), we used to put the word THAT between the sentences to express the consequence.

-Example: I was tired. I went to bed at nine o´clock. à I was so tired that I went to bed at nine o´clock.

(*That can be omitted in some sentences*)

·SUCH: It emphasizes too. But it structure is different.

(SUCH+A/AN+ADJECTIVE+NOUN).

In a rephrasing we use that too.

-Example: The book was so good that I can´t put it down. à It was such a good book that I can´t put it down.

~Here it´s a link with some exercises with answers to practice that. 

•SO: Emphasizes an adjective, an adverb or a noun. (SO+ADJETIVE/ADVERB). When we use so in a rephrasing (connecting two sentences), we used to put the word THAT between the sentences to express the consequence. -Example: I was tired. I went to bed at nine o´clock.  I was so tired that I went to bed at nine o´clock. (*That can be omitted in some sentences*) •SUCH: It emphasizes too. But it structure is different. (SUCH+A/AN+ADJECTIVE+NOUN). In a rephrasing we use that too. -Example: The book was so good that I can´t put it down.  It was such a good book that I can´t put it down. ~Here it´s a link with some exercises with answers to practice that.