A lot of adjectives are made from verbs by adding -ing or -ed:
许多形容词是在动词后加-ing 或者-ed得到的:

-ing adjectives: 引人……;使人……

The commonest -ing adjectives are:

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: 使人感到……

The commonest –ed adjectives are:

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