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Verb forms
Main verbs in English have five different forms: the base form, also known as the infinitive, e.g. work, take; the past form, e.g. worked, took; the past participle or -ed form, e.g. worked, taken (in regular verbs this takes the same form as the past, but in irregular verbs it can be different, e.g. took, taken.); the -ing form, e.g. working, taking; the third person singular present simple , or -s form, e.g. works, takes Click on a topic to learn more about these forms.
Finite and non-finite verbsImperative clauses (Be quiet!)Infinitives with and without toInfinitive: active or passive?Perfect infinitive with to (to have worked)Verbs: basic formsVerbs: formation
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