Volume 2

Must Must significa dovere e si usa per esprimere un obbligo, un comando o una necessità. Ha una sola forma uguale per tutte le persone ed è sempre seguito dalla forma base del verbo. Si usa solo al presente ed è poco usato alla forma interrogativa. forma affermativa I/you/he/she/it/ we/you/they must stop. forma negativa I/you/he/she/it/ we/you/they mustn t stop. Alla forma negativa must esprime una proibizione, un divieto: You mustn t shout! Di solito non si usa la forma interrogativa di must, si utilizza invece have to. Non dimenticare la differenza tra must e can. Must (dovere) indica un obbligo, mentre can (potere) indica una possibilità. 8 Leggi le regole da osservare nei musei, poi completa le frasi con must o mustn t seguiti dal verbo adatto, come nell esempio: Pets mustn t enter museums. 1. You ........................................................ eight easy rules. 2. You ................................................................... loudly. 3. You ............................................................ mobile phones. 4. You ................................................... flash photography. 5. You ......................................................... the works of art. 6. Visitors ....................................................... a noise inside museums. 7. Visitors .............................................................. a snack, they ................................................ a drink in the halls. 8. Walk during your visit, you .......................................... inside museums. EIGHT EASY RULES FOR VISITING MUSEUMS Museums are very special places, so please follow these rules. Please don t touch the works of art. Don t make a noise, don t talk loudly. Please walk, never run inside the galleries. No flash photography is allowed. No food, drink or gum inside museums. Do not use mobile phones. No smoking inside museums. Pets are not allowed. 9 Inserisci nelle frasi must oppure can alla forma affermativa o negativa a seconda dei casi, come nell esempio: If it s sunny, I can go out. 1. There are no buses today, you .......................... take the underground. 2. Today Alfie ........................... play tennis with me because he is ill. 3. In British schools students ................................ wear a uniform. 4. If you haven t got any eggs or sugar, you ................................. make a cake. 5. You .................................. cross when the traffic lights are red. 6. When you are waiting for the bus, you .............................. queue up. 7. You ....................... use the dictionary to learn new words. 8. When we go on holiday, we ......................... take lots of photos. WATCH THE ROAD SIGNS! 29