A. adjective + preposition
afraid of ...
good at ... / bad at ...
• Are you afraid of dogs?
• Why are you angry with me? What have I done?
• Are you angry about last night? (= something that happened last night)
• Ann is very different from her sister.
• I'm fed up with my job. I want to do something different. (= I've had enough of my job)
• The room was full of people.
• Are you good at maths?
• Tina is very bad at writing letters.
• I'm not interested in sport.
• Sue is married to a dentist. (= her husband is a dentist)
• It was kind of you to help us. Thank you very much.
• David is very friendly. He's always very nice to me.
• I'm afraid I can't help you. I'm sorry about that.
• I'm sorry for not phoning you yesterday. (or I'm sorry I didn't phone you)
B. preposition + -ing
After a preposition (at / with / for etc.), a verb ends in -ing:
• I'm not very good at telling stories.
• Are you fed up with doing the same thing every day?
• I'm sorry for not phoning you yesterday.
• Mark is thinking of buying a new car.
• Tom left without saying goodbye. (= he didn't say goodbye)
• After doing the shopping, they went home.
adjective + preposition
afraid of dogs
angry with me
angry about last night
different from her sister
fed up with my job
full of people
good at maths
bad at writing letters
interested in sport
married to a dentist
kind of you
nice to me
sorry about that
sorry for not phoning
preposition + -ing
good at telling stories
fed up with doing the same thing
sorry for not phoning you
thinking of buying a new car
left without saying goodbye
after doing the shopping