He didn't have much money. He couldn't live on it. (enough)
It's difficult to understand him because he speaks so softly
->He speaks.................................................................
->He doesn't speak....................................................
->He speaks
He í tall, so he could almost touch the ceiling
->He is..............................................
->He is..............................................
He drank strong coffee so that he couldn't go to sleep
->The coffee.....................................................
->He drank..........................................................
1. He didn't have enough money to live on.
2. He speaks so softly that it's difficult to understand him.
He doesn't speak loudly enough for us to understand.
He speaks too softly for us to understand.
3. He is tall enough to touch the ceiling.
He is so tall that he can't touch the ceiling.
4. The coffee was so strong that he couldn't go to sleep.
He drank such strong coffee that he couldn't go to sleep.
