Formation of Adjectives

Participles used as adjectives:

Both present participles (ing) and past participles (ed) can be used as adjectives. Care must be taken not to confuse them. Present participle adjectives, amusing, boring, tiring, interesting, etc., are active and mean ‘having this effect'. Past participle adjectives, amused, bored, tired, interested, etc., are passive and mean 'affected in this way'.

The play was boring. (The audience was bored.)

• Agreement

Adjectives in English have the same form for singular and plural, masculine and feminine nouns:

A good boy, good boys, a good girl, good girls