CLASSES VI - X GRAMMAR - MODALS
Modal verbs are used to express functions such as:
1.
Permission
2.
Ability
3.
Obligation
4.
Prohibition
5.
Lack of
necessity
6.
Advice
7.
possibility
8.
probability
Here is a list
of modals with examples:
Modal Verb |
Expressing |
Example |
must |
Strong obligation |
You must stop when the traffic lights
turn red. |
logical conclusion/ Certainty |
He must be very tired. He’s been
working all day long. |
|
must not |
Prohibition |
You must not smoke in the hospital. |
can |
Ability |
I can swim. |
Permission |
Can I use your phone please? |
|
Possibility |
Smoking can cause cancer. |
|
could |
ability in the past |
When I was younger I could run fast. |
polite permission |
Excuse me, could I just say
something? |
|
Possibility |
It could rain tomorrow. |
|
may |
Permission |
May I use you phone please? |
possibility, the probability |
it may rain tomorrow! |
|
might |
polite permission |
Might I suggest an idea? |
possibility, probability |
I might go on holiday to Australia
next year. |
|
need not |
lack of necessity/ absence of
obligation |
I need not buy tomatoes. There are
plenty of tomatoes in the fridge. |
should/ought
to |
50% obligation |
I should/ought to see a doctor. I
have a terrible headache. |
Advice |
You should/ought to revise your
lessons |
|
Logical conclusion |
He should/ought to be very tired.
He’s been working all day long. |
|
had better |
Advice |
You’d better revise your lessons. |
Remember
Modal verbs are followed by an infinitive without “to”, also called the bare
infinitive.
Examples:
·
Shall
Uses of Shall:
Shall Suggestions
·
Shall I get a
pizza for dinner tonight?
Offers/volunteering
That bag looks heavy. Shall I carry it for you?
·
Will
Rapid Decision
·
I’m thirsty. I
think I will buy a drink.
Offer
·
That looks
heavy. I will help you with it.
Instruction
(asking for or giving)
·
What shall I do
with your mail when it arrives
Promises
·
You shall be
the first person to know.
Confirmation
(statement of act)
·
I shall meet
you there at 7.
Promise
·
Don’t worry, I
won’t tell anyone.
Threat
·
If you don’t
stop, I will tell your mother.
Refusal won’t =
will not
·
She won’t
listen to anything I say.
In all of the
examples above, shall can be replaced by another modal verb.
Suggestion/Instructions — Should Offers — CanlCould Promises/Confirmation —
Will
· Advice or Suggestion
·
Your hair is
too long. You should get a haircut.
The situation
likely in the present
·
Mary should be
at home now. Give her a call.
Likely in the
future (Prediction)
·
They should win
tonight, they’re a better team.
Should + Have + Past participle
Meaning: The
subject did not fulfill their obligation in the past or did not act
responsibly.
·
You should have
given your boss the report yesterday when he asked for it.
Should + be +
verb -ing
Meaning: The
subject is not fulfilling their obligation now or is not acting sensibly.
·
You should be
wearing your seatbelt,
·
We should be studying
for the test right now
If we summarise
·
There are ten types of modal verbs: can, could, may, might, will,
would, shall, should, must, ought to.
·
Can (or cannot/can't) shows ability, in the sense of knowing how or being able to do
something. In informal situations, it expresses permission, in the sense of
being allowed to do something. It also shows possibility, in the sense that an
action is theoretically possible. It expresses or inquires about willingness.
Lastly, in the negative, it shows inability or impossibility.
Could (or couldn't) shows ability in the past, and expresses or inquires about permission or willingness in a more polite form. It also identifies a possibility in the present, or a possibility in the future that is dependent upon a present action. Lastly, it can be used to make requests or for giving suggestions.
·
May is used in formal
situations to express permission, in the sense of being allowed to do
something. It also expresses possibility in the present and future.
·
Might is used in formal
situations, and also to express permission in the sense of being allowed to do
something. It also expresses possibility in the present, future, and past.
·
Will (or won't) shows willingness or interest, expresses intention, and makes
predictions. It is also used to reassure someone or help them make a decision,
to make a semi-formal request, to show habitual behavior, to make a promise or
a threat, and to talk about the future or the past with certainty
·
Would (or wouldn't) enquires about willingness, shows habitual activity, comments on
someone's characteristic behavior, comments on a hypothetical possibility, and
comments on a likely truth. It also is used for asking permission, making a
request, and to express preferences. It can be used to talk about the past,
talk about the future in the past, or to talk about a situation that is
dependant upon another action.
·
Shall is used in
England, to form the simple present for I and we, and to indicate a promise in
the future. It's used in the United States to form polite questions that
include a polite request for permission, and universally in formal or legal
situations. It can also be used for offering someone help, for suggestions, or
for asking what to do.
Should (or shouldn't) conveys the idea of an obligation or makes a suggestion.
Ought to is used in the same situations as should, but with a stronger sense of obligation or intensity.
Must (or mustn't) makes a conjecture, but with some certainty. It also makes a command in a more respectful way, and it is used in similar contexts to should and ought to, but with a sense of external obligation. It can also express prohibition in the negative form.
Should vs. Ought To
Should can be replaced by ought to without change in meaning.
You ought to
study more.
You should
study more.
Note: ought to
sounds more formal than should and is used less frequently.
We use
Shouldn’t to advise not to do something, usually because it is bad or wrong.
·
You shouldn’t
throw your litter onto the street.
·
He shouldn’t
play with those wires if he doesn’t know what he is doing.
·
You shouldn’t
work so much.
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