MUST HAVE; Must expresses an opinion: an inference, a conclusion, based on known details. Due to a snow storm the pilot has toland in Vancouver. Use the modal mustwhen the obligation comes from the speaker. Use "have to" in the past, present, and future to express responsibility or necessity. The negative form of "must" expresses the idea that something is prohibited—this form is very different in meaning than the negative of "have to"! However, they are used differently depending on who imposes the obligation. A must-have object is something that many people want to own: 2. Must "Must" is also used to talk about obligation and is used in written rules and instructions: You must submit your proposal by noon on 12th July. Must have expresses an opinion about an earlier (past) situation. "Must," "have to," and "need to" in the positive or question form are used to speak about responsibilities, obligations and important actions. While must is a modal verb, have to is a semi-modal verb, in the sense that as a modal verb it is used along with the verb to express necessity, but acts like a normal verb in its formulation. 'Must' can also be used to show that we are certain something is true. Must vs. have to Both Must and have to express obligation or necessity, but there are some small differences: • Must expresses the speaker's feelings, whereas have to … 6. 23. Must, have to: present: past: When expressing obligation, we say: I must go. When we are talking about another person's obligation we use have … OK? 'All Intensive Purposes' or 'All Intents and Purposes'? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! “Shall” is one of those officious words that … One use of modals (like must, should, or may) is called the Deontic sense, and it always deals with social permissions and obligations. Synonyms: all-important, critical, essential… Antonyms: dispensable, inessential, needless… Find the right word. “We need to …” “We have to…” The modal must also expresses opinion, one person’s point of view. (No other exits were available.) The bullet of your thought must have overcome its lateral and ricochet motion and fallen into its last and steady course before it reaches the ear of the hearer, else it may plow out again through the side of his head. Must is not an ordinary English verb. (= They must resit the test) Have to is a more informal while Must is mostly used in written orders or instructions. Must and have to both express obligation. Like with negatives, if you want to use must to talk about the past, the past form depends on the meaning of must. Let’s look at one more point on how to use must in English. 1. I would like to see my sister. You must not use a calculator during the exam. (sound) The car passengers must have escaped out the back. Use the negative form of "need to" to express that something isn't necessary, but possible. Past Forms of Must. Use "must" to express something that you or a person feels is … You mustlog in to read your messages. However, "must" is generally used for strong personal obligations and "have to" is used for responsibilities at work and in everyday life. Have / Has to expresses general obligations. Have to can play the role of must in the past (had to) present, and future tenses. Teacher: You must complete this essay by Friday. chiefly US, informal : something that is necessary to have or get. Use "need to" to express that something is important for you to do. or I have to go. Synonyms & Antonyms of must-have 24 synonyms of must-have from the Merriam-Webster Thesaurus, plus 32 related words, definitions, and antonyms. 1. Delivered to your inbox! You can opt-out at any time. Use "must" to express something that you or a person feels is necessary. IMPORTANT: The past form of "have to" and "must" is "had to." Find another word for must-have. Must-have: impossible to do without. It is not always correct to substitute have to for mustin the Simple Present. Using MUST in English We use must to Express a stronger point of view. Must and have to are both used for obligation and are often quite similar. In this lesson we look at have to, must and must not, followed by a quiz to check your understanding. must-have meaning: 1. For more details, see our Privacy Policy. Usually when we use the word ‘must’ it is because the speaker has decided something is necessary to do. In this lesson, you can learn about the modal verbs must, have to and should.Do you know the difference between 'must', 'have to' and 'should'? I suspect that "must of" is one of those phrases which is on the cusp of changing from "ever so wrong" into something that is perfectly acceptable. This prioritization method was developed by Dai Clegg in 1994 for use in Rapid Application Development (RAD). "Must" is also used to give a strong recommendation: You must tell him before it's too late. b)should have c)ought to have - You ----- watching TV all night yesterday, that’s why you feel so tired now. This form is used only in the present and future. Must Do—Obligations. Have to is NOT an auxiliary verb (it uses the verb have as a main verb). We use the modal verbs "must have", "can't have" and "might have" to make guesses or deductions about an action in the past that we believe has definitely happened, has definitely not happened or possibly happened, based on our knowledge, information or evidence, or lack of it. something necessary, indispensable, or unavoidable, Post more words for must-have to Facebook, Share more words for must-have on Twitter, The Difference Between 'Hoard' and 'Horde'. However, you can use must to talk about obligations in formal or written English. Spelling it 'must of' is wrong. Choose the best option for the following questions. It can point to the past only when it is used with the present perfect tense of the principal verb. It is, however, possible if so desired. A must-have object is…. When expressing obligation, the past of must and have to is always had to: I had to wash my car yesterday . timetable, weather or administration. Listed below are explanations, examples, and uses of must / have to / need to / and mustn't / not have to / don't need to. We use have to / must / should + infinitive to talk about obligation, things that are necessary to do, or to give advice about things that are a good idea to do. Rules for the Modal Verbs Must and Have To The modal verb must is used to express obligation and necessity. 15. Use "have to" in the past, present, and future to express responsibility or necessity. At times, English speakers use "don't need to" to express that they don't expect someone to do something. In this case we are making a logical deduction based on the evidence we have. For example: All passengers must have a valid ticket. 1: Should have + past participle can mean something that would have been a good idea, but that you didn't do it. It can also be used to express necessity or strong recommendation, although native speakers prefer the more flexible form "have to." Test your knowledge - and maybe learn something along the way. "Don't have to," "don't need to" and "mustn't" have very different meanings. In the example above, the speaker decided it would be a good idea to cut his hair. I was browsing a completely unrelated site and came across the following interesting discussion on the ever increasing proliferation of the phrase, "must of":You mean "must have", btw. We include have to here for convenience. We use "must have", "can't have" and "might have" in the same way as the present perfect - the action we are describing happened, … The phrase have to doesn’t look like a modal verb, but it performs the same function. We had to go to bed at 8 o’clock when we were kids. Native English speakers use have to much more in conversation. The negative form of "have to" expresses the idea that something is not required. Both must and have to talks about obligation, but must highlight a personal obligation, and have to outlines an external obligation. It's a Modal Auxiliary Verb, which are very irregular.. One of the strange facts about modal auxiliaries is that they always have at least two kinds of meaning. Sometimes, "must" and "have to" can be used to speak about responsibilities. Learn a new word every day. I mustgo to New York. Or "must've". 'Nip it in the butt' or 'Nip it in the bud'. : When expressing a personal opinion about probability (deduction), we mostly use must to express that we feel something is true: He must … Must remains unchanged whatever be the tense or the number and person of the subject. Unlike “must” where we just make an inversion to create the interrogative, “to have to” is a little more difficult as it requires an auxiliary verb in the form of the present tense of “to do”. We use will have to more than must to express future obligation, especially when talking about obligations at a particular point in the future: He’ll have to wait five weeks for his eye operation. Background. Take a look: 11. They have to resit the test. Please tell us where you read or heard it (including the quote, if possible). You muststop smoking. 2. When we use ‘have to’, it is often because someone else has decided the action is necessary. a)should have b)ought to be c)should have been d)ought to have been e)shouldn’t have been f)ought to not have been g)should be h)ought not to have i)ought to j)ought not to have been Must Have / Would Have Referring to past events. See the full definition for must-have in the English Language Learners Dictionary. Often, you need to use a different verb. This form is often used for something that is important one time, rather than referring to a responsibility or duty. In the present or future tense, it can sometimes indicate a matter of fact ("what goes up, must come down") and sometimes of obligation ("you must pay your taxes"), or merely exaggerating what is not a necessity by describing it as such ("you simply must see the production of Coriolanus at the Donmar Warehouse if you're in London, it's superb")*. 24. "Don't have to" is used to express that something is not required. A daily challenge for crossword fanatics. "Mustn't" is used to express that something is prohibited. Different meanings of must have different negatives. Good! Also, Must expresses obligation imposed by the speaker while Have to expresses external obligation. My doctor says I have tosto… What made you want to look up must-have? Use the substitute form have towhen there is an external obligation e.g. It's like giving advice about the past when you say it to someone else, or regretting what you did or didn't do when you're talking about yourself. Slippery Words Quiz—Changing with the Times. A CONCLUSION: The car driver must have panicked when he saw the buses moving in on both sides. (Entry 2 of 2). something considered absolutely necessary or essential to own: This cookbook is a must-have for chocolate lovers. Accessed 25 Jan. 2021. I must go now. They are both followed by the infinitive. English as a Second Language (ESL) Expert, How to Use Must, Have to, and Need to in English, To Make it in Journalism, Students Must Develop a Nose for News, How to Speak English for Medical Purposes: Dental Check-up, Past, Present, and Future Are Simple Tenses, 12 Must Have Tools for Studying Live Insects, Learn to Order Events for Narrative Writing Assignments, The 201 Most Commonly Misspelled Words in English, Knowing When You Really Need to Hire an Architect, M.A., Music Performance, Cologne University of Music, B.A., Vocal Performance, Eastman School of Music. Must is a modal auxiliary verb. You mustn't be late for work on your first day. Learn more. "Don't need to" also expresses that a particular action is not necessary. I must say, this food is delicious! It can refer to the present or future. Must and have to express obligation or necessity: The main differences between must and have to are: Must means "really should or else it will be bad for you", it expresses an obligation forced by the speaker. 1. (note: in this sentence, we would not say ‘I must admit, this food is … … NOTE: "have to" is conjugated as a regular verb and therefore requires an auxiliary verb in the question form or negative. “Must-have.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/must-have. How to Use Must, Have to, and Need to in English Have to Do—Responsibilities. "Must" does not exist in the past. You must have given my message wrong. "Have to" is used to express certainty, necessity, and obligation. The bus passengers must have heard a crunch. Use the modal mustin written orders or instructions. 2. Use “must” to indicate requirements The word “must” is the clearest way to convey to your audience that they have to do something. 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