Spectrum ngữ pháp là một loạt các studybooks những tiến bộ từ tiểu học đến trung cấp. Mỗi cuốn sách trong loạt bài này có thể được sử dụng: 1. như là một tài liệu tham khảo cuốn sách ngữ pháp và tập thể dục riêng của mình, 2. như là một bổ sung một coursebook cùng cấp. | B Complete the sentences with must or mustn t and the verb in brackets. 0 You must hear hear this story it s extremely funny 1 We forget to buy some petrol. There isn t much left. 2 I go to the shops this afternoon. I ve got no food in the house. 3 You worry so much it s bad for you. 4 We book the tickets before it s too late. 5 You lock the door with this key every time you go out. 6 You see that new French film. It s really good. 7 I phone Jane tonight. She asked me to call her. c Look at this table of instructions for students in a school. Use the table to make sentences with must or mustn t. Yes No Attend all classes. Take school books home with you. Make a noise in the corridors. y Write in school books. Arrive for lessons on time. J J Bring your own pens and paper. 7 0 You must attend all classes. 1 school books home with you. 2 a noise in the corridors. 3 in school books. 4 for lessons on time. 5 your own pens and paper. D Rewrite the sentences in brackets using must or mustn t I must not. 0 Have some of this fish. It s wonderful. You must have some of this fish It s wonderful. 1 Don t tell lies. It s bad. You It s bad. 2 Passengers Do not open the door while the train is moving. Passengers while the train is moving. 3 Come for dinner with US one evening next week You one evening next week 4 All staff Show identity cards when you enter the building. All staff when they enter the building. 5 It s bad for you to eat so much unhealthy food. You so much unhealthy food. 6 Follow the instructions when using this machine. You when using this machine. 7 It s important that I write this letter today. I this letter today. PAGE 49 r 23 Have to He has to go 1 The Present Simple forms of have to are POSITIVE NEGATIVE l you we they i 7 I don t have ihas togo- He she it I doesn t have QUESTIONS Do I you we they 1 ._ - Does he she it have oso 4 We use don t have to to say that something is NOT necessary BUY NOW. .PAY NEXT YEAR 2 We use have to to talk about things
