Tense degan atama bilan ifodalanadi. Macmillian English Dictionary for Advanced Learners lug'atida zamon, ya'ni tense

3. Soʻroq gaplarni hosil qilishda must modal fe'lining oʻzi qatnashadi va egadan oldinga chiqadi.

Must you leave now? (Hozir ketishingiz shartmi?)

Must he return the book?
have to modal fe'lining soʻroq shakllari hozirgi zamonda do/does va oʻtgan zamonda did yordamchi fe'llari
bilan yasaladi.

Do you have to go now? (Siz hozir ketishingiz shartmi?)

Does he have to wear glasses?

Did you have to get up early yesterday?
4. must modal fe'li majburiyatni bildirish uchun faqat hozirgi zamonda qoʻllaniladi.

She must see the doctor today.
Boshqa zamonlarda esa have to ning tuslangan shakllari qoʻllashimiz zarur.
Past Simple
Present Perfect
Past Perfect
Ega+had to+V
1
Ega+have/has had to+V
1
Ega+had had to+V
1
Future Simple
Present Continuous
Ega+ will have to+V
1
Ega+am/is/are having to+V
1

She had to see the doctor. (U doctor bilan koʻrishishga majbur boʻldi/toʻg'ri keldi.)

She will have to see the doctor tomorrow.

She has had to see the doctor for a few times in the past three weeks.

She had had to see the doctor before she had an operation.

I am having to do a lot of work these days.
5. have to modal fe'li boshqa modal fe'llardan keyin ham qoʻllanila oladi. Masalan: may/might modal
fe'llaridan keyin.

She may have to see the doctor.
Boʻlishsiz shaklda qoʻllanilganda mustn't+V
1
va don't/doesn't have to +V
1
hozirgi zamonda bir-biridan
juda farq qiladi.
mustn't+V
1
qurilmasi -maslik shart degan ma'noni, ya'ni taqiqni bildiradi.

You mustn't walk on the grass. (Maysa ustida yurish mumkin emas/taqiqlangan)

You mustn't shout in the library.
mustn't+V
1
shakli faqat hozirgi zamonda taqiqni bildirgani sababli oʻtgan zamonda taqiqni bildirish uchun
turli xil boshqa fe'llardan foydalaniladi. Masalan:

You weren't allowed to enter the building. (allow fe'li)

It was forbidden for you to enter the building. (forbid fe'li)
don't/doesn't have to +V
1
qurilmasi shart emas, qilmasa ham boʻladi degan ma'nolarni, ya'ni majburiyat
yoʻqligini anglatadi.

It's Sunday tomorrow. I don't have to get up early .(Ertaga yakshanba. Men erta turishim shart
emas.)

You don't have to shout. I can hear you well.
Oʻtgan zamonda have to modal fe'li boʻlishsiz gaplarda didn't have to shaklini oladi va shart emas edi
qilmasa ham boʻlardi degan ma'nolarni anglatadi.

I didn't have to get up early, it was Sunday. (Erta turishim shart emas edi, yakshanba kuni edi.)

I managed to do a lot of work yesterday because I didn't have to cook.
must modal soʻzi kuchli maslahat berish (strong recommendation) ma'nosida ham qoʻllaniladi.

She is a very nice person. You must meet her.
Hamdam Atajanov

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have to modal fe'li oʻrniga hozirgi zamonda have/has got to fe'li ham qoʻllaniladi. Bunday qurilmani
og'zaki nutqda koʻp uchratamiz va bir martalik ish-harakatlar uchun qoʻllaniladi.

I have got to take a taxi today. There is no bus and I am going to be late.