Содержание►следующая > < предыдущаястр 14 из 16must, can and mayexercise 19, p. 139: study the following chart.modal not (=mustn't)duty, obligation necessityorderwe must study hard.i must buy some bread. you must go there at once.prohibitionyou mustn't smoke here.cancannot (=can’t)couldcould not(= couldn’t) can run very fast.he could walk miles and miles when he was young. we can speak english.can i have a cup of coffee? you can come at any time.you can’t cross the street here. (very sharp)you may speak to him now.may i smoke here? you may not take books away form the reading hall.may not(= mayn’t)mightmight not(=mightn’t)he said (that) i might come to see you any time before lunch.exercise 20, p. 140: practise answers to the following questions according to the model.model 1:   must i go there by an early train? (take the 10: 30)1. (a) yes, you must. (b) i am afraid, you must.2. no, you needn't. you may take the 10: 30.1.must i make up my mind today? (give the answer tomorrow). 2. must he explain to them how to use this machine? (read the instructions). 3. must i take your advice? (do as you please). 4. must they stay after classes? (go home). 5. must i take all my things now? (leave behind what you don't need). 6. must she pay all the money now? (pay only part of the sum). 7. must i let them know at once? (tomorrow). 8. must i go to him to discuss the arrangements? (phone).​