1 He prefers watching football to playing it
== He likes watching football better than playing it.
2 She didn't come. Instead,she stayed at home.
==She stayed at home instead of coming.
3 They are so busy that they can't come.
=== They are too busy to come.
===They aren't free enough to come.
4 He is taller than I.
===I am not as tall as he is
5 He failed to come on time.
===He didn't come on time.
6 We like travelling.
===We are fond of travelling.
7 You should go there again.
==You had better go there again.
8You needn't come if you don't want to.
===You don't have to come if you don't want to.