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Word form
From Teflpedia
A word form is a form that can be derived from a lemma.
Sometimes words lack forms; these are linguistically defective.
In English, the following types of words have multiple forms:
- Nouns have up to four forms; a singular and a plural, in both common case and genitive case — but with some exceptions.
- Verbs have up to 6 forms; a base form, to-infinitive, third person form, -ing form, preterite and past participle. With regular verbs, and some irregular lexical verbs, the preterite and past participle are identical in form.
- Be however has nine forms; be, to be, am, is, are, been, being, was, were.
- Full modal verbs have only two forms; a base form and a preterite.
- Adjectives and adverbs have up to three forms; a simple form, and two gradative forms; a comparative and superlative.
- gradative-defective adjectives lack gradative forms
- Simple-defective adjectives lack a simple form, but have gradative forms.
