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The preterite and past participle forms of irregular verbs follow certain patterns. These include ending in -t (e.g. build, bend, send), stem changes (whether it is a vowel, such as in sit, win or hold, or a consonant, such as in teach and seek, that changes), or adding the [n] suffix to the past participle form (e.g. drive, show, rise ...
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 ...
The traditional terms are misleading because the participles do not necessarily correspond to tense: [16] the present participle is often associated with the progressive (continuous) aspect, while the past participle is linked with the perfect aspect or passive voice. See the examples below:
The past participle of regular verbs is identical to the preterite (past tense) form, described in the previous section. For irregular verbs, see English irregular verbs. Some of these have different past tense and past participle forms (like sing–sang–sung); others have the same form for both (like make–made–made).
It is formed by combining had (the past tense of auxiliary have), been (the past participle of be), and the present participle of the main verb. Uses of the past perfect progressive are analogous to those of the present perfect progressive, except that the point of reference is in the past. For example: I was tired because I had been running.
Weak verbs form the past tense by adding endings with -d-in them (sometimes -t-) to the stem. In Modern English, these endings have merged as -ed, forming the past tense for most verbs, such as love, loved and look, looked. Weak verbs already make up the vast majority of verbs in Old English. There are two major types: class I and class II.
With the exception of the highly irregular verb be, an English verb can have up to five forms: its plain form (or bare infinitive), a third person singular present tense, a past tense (or preterite), a past participle, and the -ing form that serves as both a present participle and gerund.
Regular verbs form the simple past end-ed; however there are a few hundred irregular verbs with different forms. [2] The spelling rules for forming the past simple of regular verbs are as follows: verbs ending in -e add only –d to the end (e.g. live – lived, not *liveed), verbs ending in -y change to -ied (e.g. study – studied) and verbs ending in a group of a consonant + a vowel + a ...