A lot of adjectives are made from verbs by adding -ing or -ed:

-ing adjectives:

The commonest -ing adjectives are:

amusingshockingsurprisingfrighteninginterestingdisappointingexcitingtiringworryingboringterrifyingannoying


If you call something interesting you mean it interests you.
If you call something frightening you mean it frightens you.

I read a very interesting article in the newspaper today.
That Dracula film was absolutely terrifying.

-ed adjectives:

The commonest –ed adjectives are:

annoyedboredfrightenedworriedtiredclosed       exciteddelighteddisappointed
  

If something annoys you, you can say you feel annoyed. If something interests you, you can say you are interested.

The children had nothing to do. They were bored.

 

 

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