Please summarize this information into a definition of "modal verb" for me.

Modal verbs are a particular kind of auxiliary.
Look, I can do it! – Oh yes! So you can.
Can I use your phone? – Of course you can.
Do you think she will come? – I’m sure she will.
I must get our tickets today.
Modal verbs are used when you need to add special elements of meaning to a main verb, e.g.:
to express different degrees of doubt and possibility about the action of the main verb.
I may not be able to do it.
I think that I might have caught your cold.
I could ask for you, if you like.
You couldn’t do it, could you?
to express degrees of future possibility, ranging from the definite future, will, to the possible future, may, and the conditional future, could.
You will be seeing her on Friday at Jackie’s house.
I may be late home tomorrow evening.
I could bring some more bread home with me tonight.
to request or give permission for an action to take place.
May I come in?
You can borrow my car tonight if you like.
to make a prohibition, when used with a negative.
You shouldn’t use this computer without permission.
You cannot borrow my car tonight.
He must not see this letter.
to speculate.
The weather’s so bad the flight could be late.
It might be all over by the time we get there.
He may be very cross about all this.
to express obligation and duty.
I must give in my essay today.
Helen ought to tell the truth.
to refer to typical behaviour.
She can be very kind on occasions like this.
to add politeness to a request which might otherwise sound abrupt.
Would you please close the door?
to make conditional sentences.
in reported speech.
system
kripaya is jaankaree ko mere liye "modal kriya" kii paribhaasha main sankshep main prastut karen.

modal kriya ek vishesh prakaar kaa sahaayak he.
dekho, main kar saktaa hoon!- oh haa!to aap kar sakate hai.
kya mujhe aapak phone istemaal karne kii ajna he?- nihsandeh tumse ho saktaa he.
kya aapako lagata he ki vah aegi?- mujhe yakeen he ki vah karegi
mujhe aaj hamaare tikat milanaa chahie.
modal kriyaaon kaa upyog tab kiya jaataa he jab aapako ek mukhya kriya main arth ke vishesh tatwon ko jodne kii aavashyaktaa hoti he, udaa.:
mukhya kriya kii karrwai ke bare main andeh or sambhaavna ke vibhinn degree vyakt karne ke liye.
main ise karne main sakasham nahin ho saktaa.
mujhe lagata he ki maine aapaki thand pakad lee hogi.
main aapse puch saktaa tha, agar aapako pasand he.
aap aisa nahin kar sakate, kya aap kar sakate hai?
bhavishya kii sambhaavna kii degree vyakt karne ke liye, nishchit bhavishya se lekar, sambhav bhavishya tak, may, or sashart bhavishya tak, ho saktaa he.
aap use shuukravaar ko jaiki ke ghar par dekh rahe honge.
mujhe kal shaam ko der ho sakati he.
main aaj raat apane saath kuch or roti ghar laa saktaa tha.
ek karrwai karne ke liye anurodh karne yaa anumati dene ke liye.
kya main andar aa saktaa hoon?
agar aap chahen to aap aaj raat meri car udhaar le sakate hai.
nishedh karne ke liye, jab ek nakaaratmak ke saath upyog kiya jaataa he.
aapako anumati ke bina is computer kaa upyog nahin karnaa chahie.
aap aaj raat meri car udhaar nahin le sakate.
use yah patr nahin dekhnaa chahie.
anumaan lagane ke liye.
mausam kii itani kharaab udaan der se ho sakati he.
jab tak ham vahaan pahunchate hai, tab tak yah sab khatm ho saktaa he.
vah is sab ke bare main bahut paar ho saktaa he.
daayitv or kartavya ko vyakt karne ke liye.
mujhe aaj apane niabandh main dena hoga.
hellen ko sach bataanaa chahie.
vishisht vyavhaar kaa ullekh karne ke liye.
vah is tarah ke avasaron par bahut dayaalu ho sakati he.
ek anurodh main raajnneeti ko jodne ke liye jo anyathaa achaanak lag saktaa he.
kya aap kripaya darwaja band kar denge?
sashart vaakya banane ke liye.
report kiye gaye bhaashan main.
user
ek modal kriya ek shabd he jo andeh, sambhaavna, anumati, nishedh, atakalein, aadi ko vyakt karne ke liye ek vaakya main mukhya kriya ke tatwon ko sanshodhit karata he.
assistant
<|system|>
</s>
<|user|>
kripaya is jaankaree ko mere liye "modal kriya" kii paribhaasha main sankshep main prastut karen.

modal kriya ek vishesh prakaar kaa sahaayak he.
dekho, main kar saktaa hoon!- oh haa!to aap kar sakate hai.
kya mujhe aapak phone istemaal karne kii ajna he?- nihsandeh tumse ho saktaa he.
kya aapako lagata he ki vah aegi?- mujhe yakeen he ki vah karegi
mujhe aaj hamaare tikat milanaa chahie.
modal kriyaaon kaa upyog tab kiya jaataa he jab aapako ek mukhya kriya main arth ke vishesh tatwon ko jodne kii aavashyaktaa hoti he, udaa.:
mukhya kriya kii karrwai ke bare main andeh or sambhaavna ke vibhinn degree vyakt karne ke liye.
main ise karne main sakasham nahin ho saktaa.
mujhe lagata he ki maine aapaki thand pakad lee hogi.
main aapse puch saktaa tha, agar aapako pasand he.
aap aisa nahin kar sakate, kya aap kar sakate hai?
bhavishya kii sambhaavna kii degree vyakt karne ke liye, nishchit bhavishya se lekar, sambhav bhavishya tak, may, or sashart bhavishya tak, ho saktaa he.
aap use shuukravaar ko jaiki ke ghar par dekh rahe honge.
mujhe kal shaam ko der ho sakati he.
main aaj raat apane saath kuch or roti ghar laa saktaa tha.
ek karrwai karne ke liye anurodh karne yaa anumati dene ke liye.
kya main andar aa saktaa hoon?
agar aap chahen to aap aaj raat meri car udhaar le sakate hai.
nishedh karne ke liye, jab ek nakaaratmak ke saath upyog kiya jaataa he.
aapako anumati ke bina is computer kaa upyog nahin karnaa chahie.
aap aaj raat meri car udhaar nahin le sakate.
use yah patr nahin dekhnaa chahie.
anumaan lagane ke liye.
mausam kii itani kharaab udaan der se ho sakati he.
jab tak ham vahaan pahunchate hai, tab tak yah sab khatm ho saktaa he.
vah is sab ke bare main bahut paar ho saktaa he.
daayitv or kartavya ko vyakt karne ke liye.
mujhe aaj apane niabandh main dena hoga.
hellen ko sach bataanaa chahie.
vishisht vyavhaar kaa ullekh karne ke liye.
vah is tarah ke avasaron par bahut dayaalu ho sakati he.
ek anurodh main raajnneeti ko jodne ke liye jo anyathaa achaanak lag saktaa he.
kya aap kripaya darwaja band kar denge?
sashart vaakya banane ke liye.
report kiye gaye bhaashan main.</s>
<|assistant|>
ek modal kriya ek shabd he jo andeh, sambhaavna, anumati, nishedh, atakalein, aadi ko vyakt karne ke liye ek vaakya main mukhya kriya ke tatwon ko sanshodhit karata he.</s>
