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      modal verbs and related phrases     obligation, lack of obligation/prohibition, permission, ability   学び始める
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      I must finish this report - I don't want to annoy the boss.    学び始める
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      Must can express that the obligation is internal, not (only) because of a rule.   
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      My mum makes me study for two hours every night.    学び始める
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      Use "make someone do something" when someone forces another person to do something.   
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      I'm not supposed to eat chocolate but...    学び始める
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      Use be supposed to especially when the obligation is broken.   
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      have to go, must go, make someone go     obligation (strong) - present   学び始める
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      had to go, -, made someone go     obligation (strong) - past  
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      should go, ought to go, am supposed to go     obligation (mild) - present   学び始める
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      should have gone, ought to have gone, was supposed to go   
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      You don't have to arrive before 5 p.m... (it's not necessary)     lack of obligation/prohibition   学び始める
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      You mustn't arrive before 5 p.m. (you're not allowed to)     Note the difference between don't have to and musn't.  
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      lack of obligation - present   学び始める
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      lack of obligation - past  
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      mustn't go, can't go, am not allowed to go     prohibition (strong) - present   学び始める
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      couldn't go, wasn't allowed to go     prohibition (strong) - past  
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      shouldn't go, oughtn't to go, am not supposed to go     prohibition (mild) - present   学び始める
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      shouldn't have gone, oughtn't to have gone, wasn't supposed to go     prohibition (mild) - past  
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      Do you think she'll let me take a day off? My company allows us to work from home one day a week.    学び始める
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      use let + someone or allow someone to say that someone gave permission to someone   
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      can go, am allowed to go, may go, let someone go    学び始める
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      could go, was allowed to go, might go, let someone go   
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      He was able to find his way out of the forest and get help.    学び始める
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      for ability on a single occasion in the past, use was/were able to or managed to (not could).   
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      He managed to run the race in under three hours.    学び始める
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      Use manage to for something that is/was difficult to do.   
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      can/can't go, am/am not able to go, manage/don't manage to go    学び始める
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      could/couldn't go, was/wasn't able to go, managed/didn't manage to go   
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      Traveller's journal - Changing times    学び始める
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      Underline the correct alternatives in the blog.   
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      ... it was the 1980s and travel there was very restricted back then. Of course you (1) get a visa to enter the country as well as a permit to travel to most cities.    学び始める
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      ... it was the 1980s and travel there was very restricted back then. Of course you had to get a visa to enter the country as well as a permit to travel to most cities.   
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      Or at least you (2) get a permit;    学び始める
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      Or at least you were supposed to get a permit;   
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      I didn't always get one, and once without a permit I (3) go to a town    学び始める
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      I didn't always get one, and once without a permit I managed to go to a town   
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      that foreigners technically (4) go to.    学び始める
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      that foreigners technically couldn't go to.   
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      The police called me in and (5) me answer questions.    学び始める
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      The police called me in and made me answer questions.   
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      I spoke the language a little so I was (6) communicate with them.    学び始める
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      I spoke the language a little so I was able to communicate with them.   
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      Once they were convinced that I wasn't a spy, they (7) me go    学び始める
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      Once they were convinced that I wasn't a spy, they let me go   
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      and I was (8) to stay there as long as I wanted.    学び始める
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      and I was allowed to stay there as long as I wanted.   
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      Of course, it's changed so much now. You still (9) get a visa to enter,    学び始める
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      Of course, it's changed so much now. You still have to get a visa to enter,   
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      but you (10) get a permit to go anywhere within the country.    学び始める
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      but you don't have to get a permit to go anywhere within the country.   
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      As was always the case, if you (11) speak the language,    学び始める
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      As was always the case, if you can speak the language,   
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      it's a really enriching experience, and I think everyone (12) try to spend at least a few weeks travelling there.    学び始める
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      it's a really enriching experience, and I think everyone ought to try to spend at least a few weeks travelling there.   
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      Use the word in brackets so that the meaning stays the same.   
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      I fell asleep. It was difficult.    学び始める
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      I managed to fall asleep.   
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      We stayed for dinner. There was no choice.    学び始める
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      We had to stay for dinner   
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      He gave me permission to listen to my MP3 player    学び始める
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      He let me listen to my MP3 player.   
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      It was too dark to see anything.    学び始める
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      He wasn't able to see anything.   
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      It's a good idea for her to leave before dark.    学び始める
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      She ought to leave before dark.   
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      The rule was to pay before going in. We didn't    学び始める
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      We were supposed to pay before going in (but we didn't)   
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      The maximum age to enter this disco is eighteen.    学び始める
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      Adults aren't allowed to enter this disco.   
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      I had to change my passport photo.    学び始める
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      They made me change my passport photo.   
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      You mustn't cross at the red light.    学び始める
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      Your mother says you can stay out late.    学び始める
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      You don't have to worry about money for a nice holiday.    学び始める
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      He has to work all hours.    学び始める
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      He can't find himself in his profession.    学び始める
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      He feels he sould give everyone the impression that he's successful.    学び始める
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