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Study
Obligation and Prohibition
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You don't have to / mustn't use phone when you are driving.
mustn't
Oops!
Okay!
shouldn't = ought to not OR ought not to
ought not to
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Okay!
We have plenty of time. We don't have to/ mustn't worry.
don't have to
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Okay!
I must wear uniform at school. ( True or False)
False
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You don't have to do the dishes= ( prohibition or no obligation)
no obligation
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For specific obligation ( must or have to)
must
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You mustn't park here = You can't park here. ( True or False)
True
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You don't have to/ mustn't use your phone in quiet zones.
mustn't
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Two Modal verbs of Obligation and Necessity
must, have to
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Do you have to work on Sunday? OR Must you work on Sunday?
Do you have to work on Sunday?
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A pilot has to / must wear a uniform when he is at work.
has to
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Choose the correct ones. For the strong advice or recommendation ( ought to / must / can/ have to)
must/ have to
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I have to wear suit at work. ( True or False)
True
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I must buy a new skirt- this one is too old. (True or False)
True
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should = ought to ( True or False)
True
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When I was at primary school, I had to / must wear a horrible uniform.
had to
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For general, external obligation ( must or have to ?)
have to
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" have to" exists in all tenses. ( T or F)
True
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Oops!
Okay!
Oops!
Okay!
" Must" is a modal verb and it only exists in the present. (True or False )
True
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Okay!
You ought to wear wear warm clothes. (OR)You ought wear wear warm clothes.
You ought to wear wear warm clothes.
Oops!
Okay!
I hate must get up early OR I hate getting up early.
I hate getting up early
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For personal obligation ( must or have to)
must
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You mustn't take photo here = ( prohibition or no obligation)
prohibition
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I have to get up early tomorrow - I want to revise the lessons for exam.
False
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You should go to Lovvre museum when you are in Paris. = You Must go to Lovvre museum when you are in Paris. (Which one is strong advice)
You Must go to Lovvre museum when you are in Paris
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Okay!
You don't have to pay=You mustn't pay. (True or False)
False
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Okay!
mustn't = can't= 're not allowed to ( True or False)
True
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Okay!
For rules and laws ( must or have to)
have to
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You shouldn't drink so much coffee = You ought not to drink so much coffee. ( True or False)
True
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" should" is used to give advice or opinion. ( True or False)
True
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I had to wear a uniform when I was at primary school OR I must wear a uniform when I was at primary school.
I had to wear a uniform when I was at primary school.
Oops!
Okay!
" Don't have to " is for prohibition or no obligation/ no necessity
no obligation/ no necessity
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(have to ) is a modal verb .( True or False)
False
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Okay!
True or False? have to and must have similar meaning
True
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Do I must switch my phone off now? OR Must I switch my phone off now?
Must I switch my phone off now?
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You should wear wear warm clothes. OR ..You should to wear warm clothes.
You should wear wear warm clothes.
Oops!
Okay!
You shouldn't / don't have to walk on the grass. They've just planted flowers.
shouldn't
Oops!
Okay!
I have to / must speak to my phone company. My last bill was wrong.
must
Oops!
Okay!
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