TOO and SO - look at the examples.
You work so hard. I wish everyone worked like you. :)
You work too hard. You should take a break. :(
You look too happy (wrong) You look so happy
Again, the second sentence is a negative comment. You are saying that the person works more than enough and should work less.
too describes something bad (negative).
Pay attention in anotheer rule: so with that.. too with to
Exercises
There was ______much noise for me to work.
Sahara is ______ dry that people cannot live there.
He is ______proud to beg.
The bag is ______heavy for me to lift.
He speaks ______fast that I cannot follow him.
The coat was ______expensive for me to buy.
The problem was ______difficult that I could not solve it.
You are ______young to marry.
He was ______weak that he could not even sit up.
She is ______shy to address a gathering.
I am ______tired that I cannot walk any further.
The news is ______good to be true.
This cake is ______ delicious. I want another piece!
14. There were ______ many people in the train, so I couldn't get on.
15. When I was a child, I had ______ much free time. I loved it.
16. The salaries at that company are ______ high. I want to work there!
17. Roger thinks that he's ______ old to go to nightclubs. He says that he'd rather stay home and watch TV.
18. You put ______ much salt in the soup. It tastes terrible.
19. You are ______ beautiful.