Verbs constitute one of the main word classes in the English language. Like other types of words in the language, English verbs are not heavily inflected. Most combinations of tense, aspect, mood and voice are expressed periphrastically, using constructions with auxiliary verbs and modal verbs.
Generally, the only inflected forms of an English verb are a third person singular present tense form in -s, a past tense (also called preterite), a past participle (which may be the same as the past tense), and a form in -ing that serves as a present participle and gerund. Most verbs inflect in a simple regular fashion, although there are about 200 irregular verbs; the irregularity in nearly all cases concerns the past tense and past participle forms. The copula verb be has a larger number of different inflected forms, and is highly irregular.
For details of the uses of particular verb tenses and other forms, see the article Uses of English verb forms. For certain other specific topics, see the articles listed in the box to the right.