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The past tense of regular verbs is made by adding -d or -ed to the base form of the verb, while those of irregular verbs are formed in various ways (such as see→saw, go→went, be→was/were). With regular and some irregular verbs, the past tense form also serves as a past participle. For full details of past tense formation, see English verbs.
The simple past is used when the event happened at a particular time in the past, or during a period which ended in the past (i.e. a period that does not last up until the present time). This time frame may be explicitly stated, or implicit in the context (for example the past tense is often used when describing a sequence of past events). [7]
The past perfects continuous tense refers to an action that was happening up until a particular point in the past but was completed. [6] It is different from the past perfect tense because the emphasis of past perfect continuous verbs is not on the action having been completed by the present moment, but rather on its having taken place actively ...
Particular tense forms need not always carry their basic time-referential meaning in every case. For instance, the historical present is a use of the present tense to refer to past events. The phenomenon of fake tense is common crosslinguistically as a means of marking counterfactuality in conditionals and wishes. [8] [9]
The contracted forms of do are used only in the negative: I do not = I don't, you do not = you don't, he does not = he doesn't, we do not = we don't, they do not = they don't. have: I have, you have, he has, we have, they have. If used as an auxiliary verb in the present perfect, past perfect and future perfect, its contracted forms can be used ...
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).
The verb read /ɹiːd/ has the same spelling in all three forms, but not the same pronunciation for the past tense and past participle /ɹɛd/, as it exhibits vowel shortening. In a few cases the past tense of an irregular verb has the same form as the infinitive of a different verb.
Grammatical abbreviations are generally written in full or small caps to visually distinguish them from the translations of lexical words. For instance, capital or small-cap PAST (frequently abbreviated to PST) glosses a grammatical past-tense morpheme, while lower-case 'past' would be a literal translation of a word with that meaning.