Adjectives: -ed / -ing Forms

Many adjectives can end in -ed or -ing. For example:
- I'm excited about tomorrow.
- This is an exciting book.

When the adjective ends in -ed, it describes the feeling of something. For example:
- I'm interested in modern art. (This is my personal feeling)
- I was really bored yesterday.

When the adjective ends in -ing, it describes the feeling given by something. For example:
- Modern art is interesting. ("Modern art" can't feel, but it makes me feel interested.).
- The news was shocking. (The "news" gives us a shocking feeling)

Compare:
- He's bored. - He has nothing to do, he's not enjoying himself. This describes his feeling.
- He's boring. - He's not an interesting person. This describes the feeling he gives to other people.

Below are some common adjective pairs using -ed/-ing.
Note that the adjective doesn't change with number.

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