How To Use MUST MUST is a modal verb – in other words, it helps give meaning to other verbs. a helmet when she rides a motorcycle. Must (modal verb) Modal verbs in general are used for expressing a way (mode) actions are done. Must, as a modal verb, is commonly used for expressing obligation, certainty or necessity and it is followed by the base form of a verb in positive sentences, e.g.. She . We include have to here for convenience.. Must is a modal auxiliary verb.. must. MUST. To express obligation or duty. The most common modal verbs are can, may and must. Humans must have drinking water at least every two days. Let’s look at all its meanings here, so you can avoid misunder standings! Grammatical behavior of modal verbs. Must must be followed by a main verb in the base form but then good to note that This is a must-to … This also refers to laws and regulations. 1. Have to is NOT an auxiliary verb (it uses the verb have as a main verb). Examples: 1. Grammatically, modal verbs behave in a different way from ordinary verbs. Dare, need, have to and used to also share some of the features of modal verbs. EnglishClub: Learn English: Grammar: Verbs: Modals: have to, must have to, must. To emphasize the necessity of something. May, Might and Must are modal verbs that cause confusion for some learners. We also use them to make requests and offers. Examples of modal verbs are can, could, may, must, should, and would. Do not conjugate the verb after a modal verb into a specific form. Modal verbs are a type of auxiliary verb. I must work hard on my English! Modal verbs: can, must, mustn't, should, have to Students match the rules from the grammar guide with pictures and sentences; they then do a multiple choice exercise and finish with a gap filling exercise based on pictures. In this lesson we look at have to, must and must not, followed by a quiz to check your understanding.. have to for objective obligation The word to should not appear after a modal verb. – None Oct 9 '14 at 7:36. Grammar Point modal verbs modal verbs. ; People must remain seated until the show is over. ; You must give up smoking, it's bad for you. They show ability, possibility, obligation, and permission. Modal Verbs. ; 2. They have no -s in the third person singular (he, she, it). When you use this type of verb, the verb that follows it must be in its base form. ; You must wear a seatbelt at all times. Modal verbs don't have a past form (except can) and a past participle (3 rd form). Modal verbs are types of auxiliary verbs which express necessity, ability, permission or possibility. I think the only modal verb that is followed by an infinitive (to+V) is ought. must / must not . Example 1: Must must be followed by a main verb in the base form (so must be). I must memorize all of these rules about modal verbs. She might s go to class. The modal verbs are can, could, may, might, must, ought to, shall, should, will and would. An exception is the phrase ought to, which is considered a modal verb. Modal verbs are auxiliary verbs (also called helping verbs) like can, will, could, shall, must, would, might, and should.After a modal verb, the root form of a verb is generally used. Meaning 1: We use MUST when we want to say that it is necessary or very important that something happens in the present or future. Most modal verbs, except for ought, are followed by the verb without to. Modal verbs have only one form. wear. You can only use them with the present tense. .. must is a modal verb and a past form ( except can ) and a past participle 3! 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