Most nouns and verbs and many adjectives change their form according to how they are used in a sentence. This process is called inflection.
 Nouns inflect to show the plural:
One car – several cars.
One child – several children.
 Some adjectives inflect to make the comparative and superlative forms:
Tall – Taller – Tallest.
 Verbs inflect to show number and person in the present tense:
I work – she works.
 They also inflect to show the difference between past and present tenses:
I work – I worked.
I write – I wrote.
 There are also inflections to form the present participle:
Write – writing.
 And the past participle:
Write – written.
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