Tham khảo tài liệu 'new headway - pre intermediate - teacher's book (old edition)_5', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | have got to should must Words that go together At the doctors Do s and don ts Introduction to the unit This unit Do s and don ts introduces the functional language of obligation and advice. In the two presentation sections Work work and Problems problems students talk about the duties and disadvantages of different professions and what they have to do at home and offer advice to friends and to visitors to their country. In the Listening section students listen to three people from different parts of the world giving advice about holidays in their countries and the Reading section contains extracts from a newspaper problem page. Language aims Grammar - have got to This might be the first time that your class has been introduced to have to or have got to to express obligation. Must is often taught in first-year courses to express the obligation of the speaker. This can cause students problems as they don t realize that mustwith second and third persons sounds too authoritarian. Should would be more appropriate. They also use must to refer to a general obligation when have to sounds more natural. In British English particularly informal English have got to is normally used when talking about one thing we are obliged to do . I ve got to do my homework this evening whereas have to is used when the obligation is habitual . I usually have to visit my family at the weekend . In American English only have to is used. Common mistakes You ve got hiccups. You must have a glass of water. My parents must work six days a week. In New Headway Pre-Intermediate we do not introduce must to express obligation. This is because the difference between must to express the obligation of the speaker and have got to to express obligation in general is too subtle for the level. However must is used to express strong advice or recommendation for example You must see that new film - it s marvellous Students often find the verb have a problem because it has so many guises. In Unit 2 it was
