We use have to or need to to say something is necessary: You have to buy a ticket before you get on the train. We need to show our tickets on the train.
Must is very strong and can be formal or official. We often see must in written rules or laws. It is not common in speaking. Employees must wash their hands.
There is no past or future form of must. When we talk about rules in the past or future, we always use the correct form of have to or need to: When you go to India, you'll need to get a visa.
I had to wear a uniform at school.
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tip
Tip 1 Don't use contractions with have to.
I have to go. NOT I'VE TO GO Tip 2 - Often there is not much difference in meaning between need to and have to. - Have got to is also used in spoken English and means the same as have to. - Questions with must are very rare.
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mUSTN'T OR CAN'T
We use mustn't or can't to say that something is not allowed. Can't is much more common in spoken English. We use must not to express strong prohibition or to say something is forbidden. Drivers mustn't text and drive. We can't cross the road yet-the light's still red.
For things that were not allowed in the past, use couldn't I couldn't work in Peru because I only had a tourist visa.
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DON'T HAVE TO
We use don't have to or don't need to when there is no obligation. It means it is not necessary to do something: University students don't have to wear a uniform,
I didn't need to call a taxi. Robert drove me home.
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sHOULD AND OUGHT TO
We use should or ought to to give advice and recommendations. They have the same meaning, but ought to is rarely used in the negative. We use shouldn't instead:We should see as much as possible. We shouldn't waste time. We ought to see as much as possible.
MODALS OF OBLIGATIONS
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Created on December 13, 2024
MODALS OF OBLIGATIONS
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Transcript
MODALS OF OBLIGATIONS
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Index
sHOULD AND OUGHT TO
mUST, HAVE TO AND NEED TO
tip
Video
Practice
mUSTN'T OR CAN'T
DON'T HAVE TO
mUST, HAVE TO AND NEED TO
We use have to or need to to say something is necessary: You have to buy a ticket before you get on the train. We need to show our tickets on the train. Must is very strong and can be formal or official. We often see must in written rules or laws. It is not common in speaking. Employees must wash their hands. There is no past or future form of must. When we talk about rules in the past or future, we always use the correct form of have to or need to: When you go to India, you'll need to get a visa. I had to wear a uniform at school.
Volver
Inicio
Siguiente
tip
Tip 1 Don't use contractions with have to. I have to go. NOT I'VE TO GO Tip 2 - Often there is not much difference in meaning between need to and have to. - Have got to is also used in spoken English and means the same as have to. - Questions with must are very rare.
Volver
Inicio
Siguiente
mUSTN'T OR CAN'T
We use mustn't or can't to say that something is not allowed. Can't is much more common in spoken English. We use must not to express strong prohibition or to say something is forbidden. Drivers mustn't text and drive. We can't cross the road yet-the light's still red. For things that were not allowed in the past, use couldn't I couldn't work in Peru because I only had a tourist visa.
Volver
Inicio
Siguiente
DON'T HAVE TO
We use don't have to or don't need to when there is no obligation. It means it is not necessary to do something: University students don't have to wear a uniform, I didn't need to call a taxi. Robert drove me home.
Volver
Inicio
Siguiente
sHOULD AND OUGHT TO
We use should or ought to to give advice and recommendations. They have the same meaning, but ought to is rarely used in the negative. We use shouldn't instead:We should see as much as possible. We shouldn't waste time. We ought to see as much as possible.
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vIDEO
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pRACTICE