We Must Remember What Happened in the Past So That It Will Never Happen Again
In English in that location are various ways to depict rules and obligations, and as a student it tin can exist tricky to empathize which way is right for each situation. Here is a clarification of each modal verb that we apply to express obligation and how and when to use them.
Must
'Must' is the basic and most direct way of saying something is compulsory. It ways you have no choice but to practise (or not practise) an action. We tin only use 'must' in the present form to describe a general or permanent obligation, or an obligation in the almost hereafter. The structure of 'must' is easy considering it is the same for every field of study:
Here are some examples:
When yous bulldoze you must wear a seatbelt.
They must hand in their projects before the 8th June.
I must remember to send a birthday card to my Dad.
He must study harder if he wants to pass the exam.
We must get to the airport two hours before the flight.
To brand negative sentences nosotros add 'not which is normally contracted to n't:
We use 'mustn't' to limited a prohibition or strong obligation. For example:
When the traffic lights are cherry you lot mustn't get.
They mustn't use their mobile phones during lessons.
We mustn't stand up upward while the aeroplane is taking off.
I mustn't drink any more coffee, otherwise I won't sleep tonight.
She mustn't go exterior without a jacket. It's really cold.
Passengers must not lean on the doors.
It's possible to make questions with 'must' but information technology's not very common in mod English. To make the question form we capsize the subject and 'must':
Here are some examples:
Must I become to the party? I don't really want to.
What time must we leave? Not later than 2pm.
Must he make so much noise? It's really annoying.
Why must the children practise so much homework?
What must you wear at work?
Who must we call for an appointment?
Accept to
In the affirmative course, 'have to' has the same significant as 'must' and is used to express obligations. However, 'have to' is much more flexible than 'must' because we can use it in the by, the present and the hereafter. For this reason information technology is very ordinarily used in modernistic English language. Its structure is the same as any normal verb:
Here are some examples of affirmative sentences:
I have to electronic mail the supplier before he sends the goods.
We have to do the shopping considering the cupboards are empty.
She has to take two trains and a bus to get to work every day.
You lot have to practice if you lot want to be fluent.
Motorcyclists have to habiliment a helmet.
If you're a foreigner you have to fill in a landing menu.
We apply questions with 'have to' to ask if something is obligatory, and questions with 'have to' are much more than common in modern English than questions with 'must'. Here are some examples:
What fourth dimension practice y'all have to start work?
Do we accept to accept annihilation with united states to the course?
Why do they accept to exercise overtime? – Considering their deadline is tomorrow.
Does he accept to wear a suit to piece of work?
Practice I have to bring some form of ID?
What practise nosotros have to do now?
The negative grade of 'have to' has a very different meaning from 'mustn't'. We use 'don't accept to' to hateful something is not necessary and that there is no obligation. For example:
When y'all ride a bicycle yous don't have to wear a helmet, merely it's a skilful idea.
She doesn't accept to come to the meeting if she doesn't want to.
We don't accept to wear uniforms to school in Italian republic.
I don't have to piece of work on Saturdays so I can exercise what I want.
They don't accept to read all the books the teacher recommended, just one of them.
Y'all don't have to pay to utilize the motorways in England. They are complimentary.
Obligations in the by and in the hereafter
To describe an obligation in the by, the merely form possible is the past of 'take to' which is 'had to'. And so the simple past class of 'must' is 'had to'. The structure is the aforementioned for all subjects:
For case:
I had to look a long time for my bus.
We didn't have to use our passports. They accepted our ID cards.
Did you have to pay a fine when the law stopped you?
The doctor told her she had to lose weight.
They had to queue up for ii hours to go through security. They nearly missed their flight.
You had to do a lot of conference calls in your last job, didn't you?
We tin also apply 'have to' in other tenses, like the present perfect form when we desire to describe contempo obligations or obligations within an unfinished fourth dimension period. For example:
I've had to work a lot this week.
She'southward had to leave early because her girl is sick.
They haven't had to go to the doctor for years. They've very healthy kids.
We can also use 'have to' with 'volition' to describe an obligation, or lack of obligation, in the future. For instance::
You lot'll have to piece of work hard if you desire to get a promotion.
Nosotros'll have to hurry up. The film starts in ten minutes.
She won't have to starting time her job until next calendar month, so she's going on holiday.
Volition they accept to sign a register during lessons?
I'll have to train difficult for the marathon. I'm not fit enough yet.
You'll have to tell Marie the truth, otherwise you lot'll get into trouble.
Must or Have to?
Then when practise you use 'must' and when do y'all utilise 'have to'? Mostly speaking, in the present affirmative form you can apply either 'must' or 'accept to'. Notwithstanding, there is a slight deviation when nosotros speak in the first person. When you lot desire to draw an internal obligation (an social club you requite yourself), it's ameliorate to use 'must'. For example:
These pants don't fit me anymore. I must lose weight.
On the contrary, when you lot describe an external obligation (an guild someone gives you) we utilize 'take to'. For example:
My doctor told me I'g overweight and I have to get on a nutrition.
Instead when orders are general and official, for case on notices and documents, we usually use 'must'. For example:
Passengers must go on their bags with them at all times.
In negative sentences you demand to remember that if you desire to describe an obligation to not practice something, yous need to utilize 'mustn't'. While if you want to say that at that place is no obligation, apply 'don't have to'. For example:
You lot mustn't do that! (Don't practise it considering it is not permitted.)
You don't accept to do that. (You take no obligation to do it but you tin if you want to.)
Shall
In some documents and official situations y'all can notice 'shall' used to depict formal obligations. For example:
Employees shall provide a medical document for sick get out.
Both parties shall give reasonable discover if they cannot attend the hearing.
Hotel guests shall pay for any damage to the rooms.
Members shall not use the gym equipment without a demonstration from the staff.
You shall wear your ID bluecoat at all times.
Applicants shall come to interviews with their CV and copies of their qualifications.
Demand
Nosotros use 'demand' to depict a necessity. It has a very similar meaning to obligation and tin therefore be a more polite way of saying 'must' or 'have to'. Unusually, 'need' is both a normal verb and besides a modal verb. In almost all cases you tin but use the normal verb class which has a regular structure:
Here are some examples:
We demand to make full upwards with petrol. The tank is about empty.
Do you need anything from the shops?
They don't need to come up early. They can come whenever they're gear up.
In modern English language, 'need' as a modal verb is only really used in the negative form and without 'to'. For example:
Yous needn't do the washing up. I'll do information technology later.
They needn't complete the work right abroad. There's plenty of time.
She needn't worry nigh going to the dentist'southward. He's very kind.
Due north.B. Yous 'don't demand to' and 'you needn't' are very similar in significant to 'you don't accept to'.
May
We use 'may' to inquire and give permission formally. The construction of 'may' is like any other modal verb:
Here are some examples:
May I come in?
You may have a seat hither. The officer volition come in a few minutes.
They may use the equipment as long as they utilise if advisedly.
May we have some water?
He may have the exam again.
You may not use your phone while driving.
And so now yous've seen the differences these ways of expressing obligation, you're prepare to practice! Endeavor some fun exercises and practice actress practice by making some examples to draw some of your personal obligations.
Source: https://www.wallstreetenglish.com/exercises/the-difference-between-must-have-to-shall-need-and-may
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