1. You should drink water You have to drink water You must drink water

2. +- MUST +INF HAVE TO+ INF Have to: General, external reason (law) Tasks to be done Have/had/will have to Must: specific obligations, personal obligations MODAL: +/- STRONG RECOMMENDATION: Both MUSN’T + INF LAW ORDER You musn’t eat it MODAL: +/- Can’t Not allowed to DON’T HAVE TO +INF You don’t have to eat it. SHOULD + INF Advice Recommendations Polite obligation MODAL: +/- Strong“Secretly” strong Strong: phohibition No obligation/ necessity SHOULDN’T + INF Advice Recomm. MODAL: +/- Advice

18.  You ____ speak to your brother and try to solve that problem.  You ____ speak to your brother and try to solve that problem.  You ________ come with us to the cinema; the film we are going to see is marvellous.  You ________ come with us to the cinema; the film we are going to see is marvellous.  You are very fat. You ________ practice sport (advice).  You are very fat. You ________ practice sport (advice).  Please, we are in the church; you ________ stop making that unpleasant noise (A father to his son)  If you want to watch TV, first you ________ finish your homework.  If you want to watch TV, first you ________ finish your homework.  If I want to buy a new house I ________ get a mortgage (A mother to her daughter).  If I want to buy a new house I ________ get a mortgage (A mother to her daughter).  You cannot go out with your friends. You ________ stay at home because you have fever.  You cannot go out with your friends. You ________ stay at home because you have fever.  In internal flights you ________ check in one hour before the departure.  In internal flights you ________ check in one hour before the departure.  I ________ go to the bank to get some money.  I ________ go to the bank to get some money.

19. You should speak to your brother and try to solve that problem You should speak to your brother and try to solve that problem You should come with us to the cinema; the film we are going to see is marvellous You should come with us to the cinema; the film we are going to see is marvellous You are very fat. You should practice sport 4. You are very fat. You should practice sport 4. Please, we are in the church; you must stop making that unpleasant noise Please, we are in the church; you must stop making that unpleasant noise If you want to watch TV, first you must finish your homework If you want to watch TV, first you must finish your homework If I want to buy a new house I have to get a mortgage If I want to buy a new house I have to get a mortgage You cannot go out with your friends. You must stay at home because you have fever. You cannot go out with your friends. You must stay at home because you have fever. In internal flights you have to check in one hour before the departure. In internal flights you have to check in one hour before the departure. I have to /must go to the bank to get some money. I have to /must go to the bank to get some money.

20.  You ________ visit Paris. What a beautiful city!.  You ________ visit Paris. What a beautiful city!.  The doctor is very worried about my dad and has told him that he ________ work less.  The doctor is very worried about my dad and has told him that he ________ work less.  I ________ fill the tank; it is almost empty.  I ________ fill the tank; it is almost empty.  Our teachers have told us that we ________ be quiet during the class today.  Our teachers have told us that we ________ be quiet during the class today.  You will have exams in two weeks. You ________ study harder (obligation)  (The police officer to the protesters) You ________ leave this place immediately.  (The police officer to the protesters) You ________ leave this place immediately.  I ________ leave immediately; it is very late and tomorrow I have to get up early.  I ________ leave immediately; it is very late and tomorrow I have to get up early.

21. You should/must/have to visit Paris. What a beautiful city! You should/must/have to visit Paris. What a beautiful city! The doctor is very worried about my dad and has told him that he has to work less The doctor is very worried about my dad and has told him that he has to work less I have to fill the tank; it is almost empty I have to fill the tank; it is almost empty Our teachers have told us that we must be quiet during the class today. Our teachers have told us that we must be quiet during the class today. You will have exams in two weeks. You must/have to study harder You will have exams in two weeks. You must/have to study harder You must leave this place immediately You must leave this place immediately I have to leave immediately; it is very late and tomorrow I have to get up early I have to leave immediately; it is very late and tomorrow I have to get up early

22.  In the petrol station we ________ switch off the engine before filling the tank.  In the petrol station we ________ switch off the engine before filling the tank.  The weather is really nice. We ________ go for a walk.  The weather is really nice. We ________ go for a walk.  You ________ to go to the dentist; you have lost a filling (consejo muy enfático).  You ________ to go to the dentist; you have lost a filling (consejo muy enfático).  You ________ go by plane; by car it is a very long journey.  You ________ go by plane; by car it is a very long journey.  You ________ read more; it is very good for your education.  You ________ read more; it is very good for your education.  Kevin, you ________ shave yourself; you look a little bit scruffy (A mother to her son).  Kevin, you ________ shave yourself; you look a little bit scruffy (A mother to her son).  You ________ get up; it is very late (orden).  You ________ get up; it is very late (orden).  Jane, you ________ rest; you look very tired.  Jane, you ________ rest; you look very tired.  The police told us that we ________ get out of the car.

23. In the petrol station we have to switch off the engine before filling the tank In the petrol station we have to switch off the engine before filling the tank The weather is really nice. We should go for a walk The weather is really nice. We should go for a walk You must/have to go to the dentist; you have lost a filling You must/have to go to the dentist; you have lost a filling You should go by plane; by car it is a very long journey You should go by plane; by car it is a very long journey You should read more; it is very good for your education You should read more; it is very good for your education Kevin, you should /must (boss) shave yourself; you look a little bit scruffy Kevin, you should /must (boss) shave yourself; you look a little bit scruffy You must get up; it is very late You must get up; it is very late Jane, you should rest; you look very tired Jane, you should rest; you look very tired The police told us that we had to get out of the car The police told us that we had to get out of the car