Use the -ing form after these verbs to express likes and dislikes: like, love, prefer, enjoy and hate.
The -ing form is also used after the verbs go, spend time, start, stop, admit, deny, keep and (don't) mind.
Use -ing forms after prepositions. Certain verbs and adjectives take certain prepositions.
Adjective + preposition + -ing
 be good / bad at 
  be interested in 
  be proud / ashamed
  / afraid of 
  be worried / concerned
  / excited about 
Verb + preposition + -ing
agree with, believe in, insist on, think of, be arrested for, be accused of, be bored with, be fed up with
Before or after + -ing
Use the -ing form to make suggestions after How about...?, What about...?, Do you feel like...?.
The -ing form is also used in many compound nouns: