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English irregular verbs are now a closed group, which means that newly formed verbs are always regular and do not adopt any of the irregular patterns. This list only contains verb forms which are listed in the major dictionaries as being standard usage in modern English. There are also many thousands of archaic, non-standard and dialect variants.
This is a list of English auxiliary verbs, i.e. helping verbs, which include Modal verbs and Semi-modal verbs. See also auxiliary verbs, light verbs, ...
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In some verbs, the past tense, past participle, or both are identical in form to the basic (infinitive) form of the verb. This is the case with certain strong verbs, where historical sound changes have led to a leveling of the vowel modifications: for example, let has both past tense and past participle identical to the infinitive, while come ...
For example, the verb write has the principal parts write (base form), wrote (past), and written (past participle); the remaining inflected forms (writes, writing) are derived regularly from the base form. Some irregular verbs have identical past tense and past participle forms (as the regular verbs do), as with send–sent–sent. The ...
The first English grammar, Bref Grammar for English by William Bullokar, published in 1586, does not use the term "auxiliary" but says: All other verbs are called verbs-neuters-un-perfect because they require the infinitive mood of another verb to express their signification of meaning perfectly: and be these, may, can, might or mought, could, would, should, must, ought, and sometimes, will ...
The simple past or past simple, sometimes also called the preterite, consists of the bare past tense of the verb (ending in -ed for regular verbs, and formed in various ways for irregular ones, with the following spelling rules for regular verbs: verbs ending in -e add only –d to the end (e.g. live – lived, not *liveed), verbs ending in -y ...