B1 — 17-dars: Modals of deduction (must be / can't be / might be) — xulosa va ehtimol

B1 — O'RTA · 17-dars

1. Dars nomi, maqsad va motivatsiya

Bu darsda modallarning yangi vazifasini o'rganasiz: xulosa chiqarish va ehtimolni baholash (deduction / probability). Ya'ni biror narsa haqida qanchalik ishonchli ekanini aytish — must (aniq), can't (aniq emas), might/may/could (ehtimol).

He's not answering — he must be busy. (Javob bermayapti — band bo'lsa kerak.) That can't be right. (Bu to'g'ri bo'lishi mumkin emas.) She might be at home. (U uyda bo'lishi mumkin.) They must have left already. (Ular allaqachon ketgan bo'lsa kerak.)

Real hayotda nega kerak:

• Taxmin/xulosa (kundalik): "Whose phone is this? It must be Tom's." "He can't be serious!"
• Ehtimol: "She might come later." "It could be true."
• Muammoni tahlil (ish/texnik): "The server must be down." "It can't be a network issue — that's fine."

Asosiy tushuncha — modal = "ishonch darajasi": bu yerda modallar majburiyat/qobiliyat emas (A2-17), balki siz qanchalik ishonasiz ekanini bildiradi:

• must = "aniq, mantiqan shunday" (95% ishonch — ijobiy xulosa)
• can't = "aniq emas, mumkin emas" (95% ishonch — salbiy xulosa)
• might / may / could = "ehtimol, balki" (50% — noaniq)

Bu — dalilga asoslangan taxmin: ko'rgan/bilgan narsangizdan xulosa chiqarasiz. "Chiroq yonyapti u uyda bo'lsa kerak."

O'xshatish: modallar — "ishonch termometri". must — yuqori (qaynoq, deyarli aniq). might/could — o'rta (iliq, ehtimol). can't — past, lekin teskari tomonda aniq (muzdek "yo'q"). Detektiv kabi: dalillarga qarab "bu … bo'lsa kerak" yoki "bu … bo'lishi mumkin emas".

2. Avvalgi darslardan takror (spiral)

• A2-17 (must / have to): must — majburiyat. Bugun — must = aniq xulosa (boshqa vazifa).
• A2-26 (could / may): could/may — ruxsat/imkon. Bugun — ehtimol.
• A2-32 (might): might — ehtimol. Bugun chuqurroq.
• B1-1,7 (perfect): have/had + V3 — must have + V3 (o'tmish xulosasi).
• Tez mashq: ishonch darajasi: 95% ijobiy ? (must), 95% salbiy ? (can't), 50% ? (might).

3. Grammatika — chuqur, to'liq tushuntirish

3.1. Ishonch darajasi shkalasi (present)

100% IJOBIY:   is/are (fakt) — "He IS at home." (bilaman)
 95% IJOBIY:   must be — "He MUST BE at home." (mantiqan)
 50% EHTIMOL:  might/may/could be — "He MIGHT BE at home." (balki)
 95% SALBIY:   can't be — "He CAN'T BE at home." (mumkin emas)
100% SALBIY:   isn't (fakt) — "He ISN'T at home."

Tuzilma: modal + be + (sifat/ot/joy) yoki modal + V1. He must be tired. / She might know. / It can't be true.

3.2. must — ijobiy xulosa (aniq, mantiqan)

Dalil asosida "aniq shunday" degan xulosa:

The lights are on, so someone must be home.   — Chiroq yonyapti, demak kimdir uyda bo'lsa kerak.
You've worked all day — you must be exhausted. — Kun bo'yi ishladingiz — holdan toygansiz-da.
This must be the right address.                — Bu to'g'ri manzil bo'lsa kerak.
He didn't eat — he must be ill.                — U ovqat yemadi — kasal bo'lsa kerak.

must (xulosa) ≠ must (majburiyat): "You must be tired" (= aniq charchagansiz — xulosa) ≠ "You must rest" (= dam oling — majburiyat). Kontekst farqlaydi.

must vs have to (xulosa ≠ majburiyat): xulosa/ehtimol ma'nosida deyarli har doim must ishlatiladi ("He must be rich" — albatta boy). have to — asosan majburiyat ("I have to work" — ishlashim shart), xulosa emas. (Amerikacha nutqda ba'zan "This has to be a mistake" = "albatta xato" ham eshitiladi, lekin B1 uchun sodda qoida: xulosa must, majburiyat have to deb ajrating.)

3.3. can't — salbiy xulosa (mumkin emas)

"Aniq emas / bo'lishi mumkin emas" degan xulosa (must ning teskarisi):

She can't be at work — it's Sunday!           — U ishda bo'lishi mumkin emas — yakshanba!
You can't be hungry — you've just eaten.       — Och bo'lishingiz mumkin emas — endigina ovqatlandingiz.
That can't be true.                             — Bu rost bo'lishi mumkin emas.
He can't be serious.                            — U jiddiy bo'lishi mumkin emas (hazillashyapti).

can't (NOT mustn't!): salbiy xulosa = can't be (mumkin emas), mustn't EMAS. mustn't = taqiq (A2-17), xulosa emas. "She can't be home" ( — xulosa) ≠ "She mustn't be home" ( bu yerda).

couldn't ham bo'ladi: salbiy xulosani biroz muloyimroq aytish uchun couldn't be ham ishlatiladi: "She couldn't be at work — it's Sunday." O'tmishda esa can't have + V3 = couldn't have + V3 (ikkalasi to'g'ri: "He couldn't have finished already!"). E'tibor bering: bu — qobiliyat couldn't (A2-26) emas, balki salbiy xulosa.

3.4. might / may / could — ehtimol (balki)

"Balki, ehtimol" — noaniq taxmin (50%):

She might be at home.            — U uyda bo'lishi mumkin.
It may rain later.               — Keyinroq yomg'ir yog'ishi mumkin.
He could be stuck in traffic.     — U tirbandlikda qolgan bo'lishi mumkin.
I'm not sure — it might be true.  — Aniq emasman — rost bo'lishi mumkin.

might = may = could (ehtimol ma'noda — deyarli bir xil). Inkor ehtimol: might not / may not ("She might not come" — kelmasligi mumkin). couldn't — bu yerda emas (couldn't = qobiliyat yo'q, A2-26).

3.5. O'tmish xulosasi — modal + have + V3

O'tmish haqida xulosa: must/can't/might + have + V3:

must have + V3 (aniq o'tmish xulosa):
  The ground is wet — it must have rained.    — Yer ho'l — yomg'ir yog'gan bo'lsa kerak.
  She's not here — she must have left.         — U yo'q — ketgan bo'lsa kerak.
can't have + V3 (mumkin emas, o'tmish):
  He can't have finished already!              — U allaqachon tugatgan bo'lishi mumkin emas!
  You can't have seen her — she's abroad.       — Uni ko'rgan bo'lishing mumkin emas — u chet elda.
might/may/could have + V3 (ehtimol, o'tmish):
  I might have left my keys at home.            — Kalitlarimni uyda qoldirgan bo'lishim mumkin.
  She may have forgotten.                        — U unutgan bo'lishi mumkin.

Tuzilma: modal + have + V3 (have o'zgarmaydi). Bu — Present Perfect (B1-1) emas, o'tmish xulosasi. "must have left" = "ketgan bo'lsa kerak" (taxmin, aniq emas).

Bog'lanish: can't have + V3 o'rniga couldn't have + V3 ham to'g'ri ("She couldn't have known" — bilgan bo'lishi mumkin emas). Bu modal + have + V3 shakllari keyingi darslardan 19-darsda (modal perfects: should/could/would have + V3 — o'tmishga afsus/tanqid) yana kengaytiriladi.

3.6. Ishonch darajasi — to'liq jadval (present + past)

Ishonch foizi bilan: must be ≈ 95% (deyarli aniq) may/might/could be ≈ 50% (balki) might not be ≈ 40% (balki emas) can't be ≈ 0% (aniq emas). Foizni dalilning kuchi belgilaydi; 100% aniqlikda modal emas, oddiy is / isn't ishlatiladi.

Mini-mashq (ishonch darajasi): bo'shliqni to'ldiring, so'ng javobni tekshiring.

1. The dog is barking. Someone ___ be at the door. must (sabab bor — aniq ijobiy xulosa).
2. He owns three houses and two cars. He ___ be poor. can't (dalil teskari — mumkin emas).
3. I'm not sure, but she ___ know the answer. might (noaniq — ehtimol).

3.7. Continuous shakl — must be + V-ing

He's not answering — he must be sleeping.     — Javob bermayapti — uxlayotgan bo'lsa kerak.
She might be working right now.                — U hozir ishlayotgan bo'lishi mumkin.

modal + be + V-ing — hozir davom etayotgan harakat haqida xulosa.

4. Misollar (ishonch darajasi bo'yicha)

MUST (aniq): He's smiling — he must be happy. / They must be rich; look at their house.
CAN'T (mumkin emas): It can't be far. / She can't have meant that.
MIGHT/MAY/COULD (ehtimol): It might snow. / He may be late. / They could be at lunch.
PAST: I must have lost it. / He can't have known. / She might have missed the bus.

Bitta vaziyat — uch daraja: telefon jiringlayapti, lekin u ko'tarmayapti. Bir xil dalil, turli xulosa:

• He must be in a meeting. — majlisda bo'lsa kerak (kuchli dalil — 95%).
• He might be driving. — mashina haydayotgan bo'lishi mumkin (ehtimol — 50%).
• He can't be asleep — it's midday. — uxlayotgan bo'lishi mumkin emas — tush payti (teskari dalil — 0%).

Xulosa dalilga bog'liq: dalil qanchalik kuchli bo'lsa, modal shunchalik ishonchli (must); dalil zaif bo'lsa — might/could; dalil teskari bo'lsa — can't.

5. Talaffuz bo'limi

must be /məs(t) bi/ "məs-bi"   can't be /kɑːnt bi/ "ka:nt-bi"
might be /maɪt bi/ "mayt-bi"   must have /məst əv/ "məst-əv" (NOT "must of"!)
"must have left"  "məst-əv-left"   "can't have"  "ka:nt-əv"

Native siri: must have "must əv" (have zaif "əv") — yozuvda must have, NOT "must of"! (eshitilishi "must of" ga o'xshaydi, lekin noto'g'ri). must be "məs-bi" (t tushadi).

Topshiriq (shadowing): "He must be tired. That can't be true. She might have left." ni ovoz chiqarib ayting; must be = "məs-bi" (t tushadi), must have = "məst-əv" (have zaiflashadi).

6. So'z boyligi (Anki)

Tayyor iboralar (chunks):

• You must be joking! — "Hazillashyapsiz-da!"
• It can't be that hard. — "Bunchalik qiyin bo'lishi mumkin emas."
• He must be in his twenties. — "U yigirma yoshlarda bo'lsa kerak."
• That would explain it. — "Demak shundan ekan."
• I must have missed it. — "O'tkazib yuborgan bo'lsam kerak."

7. O'qish matni va dialog (input)

Dialog — taxmin qilish (modals of deduction):

A: Look, the office lights are still on. Someone must be working late. — Qara, ofis chiroqlari hali yoniq. Kimdir kech ishlayotgan bo'lsa kerak.
B: It could be the cleaners. They usually come in the evening. — Tozalovchilar bo'lishi mumkin. Ular odatda kechqurun keladi.
A: At 11 p.m.? They can't be cleaning this late. — Kechki 11 da? Bunchalik kech tozalashlari mumkin emas.
B: Hmm, you're right. It might be Aziz, then — he had a deadline. — Hmm, haqsan. Unda Aziz bo'lishi mumkin — uning muddati bor edi.
A: That makes sense. He must be stressed if he's still here. — Mantiqli. Hali shu yerda bo'lsa, asabiy bo'lsa kerak.
B: Should we call him? He might need help. — Qo'ng'iroq qilaylikmi? Yordam kerak bo'lishi mumkin.
A: Good idea. But he may have gone home already and just left the lights on. — Yaxshi fikr. Lekin allaqachon uyga ketgan va chiroqni o'chirmagan bo'lishi ham mumkin.
B: True. Either way, let's check. — To'g'ri. Baribir, tekshiraylik.

O'qish matni — "The mystery package" (taxmin — modals):

This morning, a package was on my doorstep with no name on it. — Bugun ertalab, eshigim oldida ismsiz bir posilka turardi.
It must have been delivered during the night, because it wasn't there yesterday. — U kechasi yetkazilgan bo'lsa kerak, chunki kecha yo'q edi.
It can't be a mistake — my address is printed clearly on it. — Bu xato bo'lishi mumkin emas — manzilim unga aniq bosilgan.
It might be a birthday gift, but my birthday isn't for months. — Bu tug'ilgan kun sovg'asi bo'lishi mumkin, lekin tug'ilgan kunimga oylar bor.
It could be something I ordered and forgot about. — O'zim buyurtma qilib, unutgan narsam bo'lishi ham mumkin.
It's quite heavy, so it must contain something solid. — Ancha og'ir, demak ichida qattiq narsa bo'lsa kerak.
I haven't opened it yet — but I must admit, I'm very curious! — Hali ochmadim — lekin tan olishim kerak, juda qiziqyapman!

Topshiriq: matnda har modal (must have been, can't be, might be, could be, must contain) ni belgilang; har biri qanday ishonch darajasi? So'ng biror noaniq vaziyat (kim qo'ng'iroq qildi? nega kechikdi?) haqida 5 taxmin yozing (must/can't/might bilan).

8. O'zbekcha-inglizcha tipik xatolar

• mustn't (can't o'rniga) salbiy xulosa: She mustn't be home. She can't be home. (salbiy xulosa = can't; mustn't = taqiq).

• must of / could of (have o'rniga): He must of left. It could of been... He must have left. It could have been… (have, "of" emas!).

• can (might o'rniga) ehtimol: It can be true. (ehtimol ma'noda). It might/could be true. (ehtimol might/could; can — umumiy imkon).

• must + V3 (be/have tushib): He must tired. / She must left. He must be tired. / She must have left. (must + be/have).

• couldn't (might not o'rniga): She couldn't come later. (ehtimol ma'noda). She might not come later. (ehtimol inkor might not).

9. Mashqlar

Mashq 1. must, can't yoki might — to'g'risini tanlang:

1. He's been travelling all day. He ___ be tired. (aniq)
2. That ___ be John — he's in London. (mumkin emas)
3. I'm not sure where she is. She ___ be at home. (ehtimol)
4. The phone's off. He ___ be in a meeting. (aniq)
5. You ___ be serious! (mumkin emas)

Mashq 2. O'tmish xulosasi (must/can't/might have + V3):

1. The ground is wet. It ___ (rain). (aniq)
2. He passed without studying? He ___ (cheat)! (mumkin emas — bu yaxshi talaba)
3. I can't find my keys. I ___ (leave) them at work. (ehtimol)

Mashq 3. be yoki have qo'shing:

1. She must ___ tired.
2. He must ___ left.
3. It can't ___ true.
4. They might ___ forgotten.

Mashq 4. Xatoni to'g'rilang: She mustn't be home, the lights are off., He must of forgotten., It can be true, I'm not sure., He must tired., She must left already.

Mashq 5. O'zbekchadan inglizchaga:

1. U band bo'lsa kerak. = ___
2. Bu rost bo'lishi mumkin emas. = ___
3. U uyda bo'lishi mumkin. = ___
4. Yomg'ir yog'gan bo'lsa kerak. = ___
5. Kalitlarimni qoldirgan bo'lishim mumkin. = ___

10. Production drill + model javoblar

Drill A — dalil xulosa:

"The lights are on."  "Someone must be home."
"He's not answering."  "He ___ ." (must/might)
"She's smiling."  "She ___ ." (must be happy)

Drill B — o'tmish xulosa (have + V3):

"The floor is wet."  "It must have rained / someone must have spilled water."
"He looks upset."  "Something ___ ."

Drill C — noaniq vaziyatga 3 taxmin:

"Why is she late?"  "She might ___ . She could ___ . She must ___ ."

Model javoblar (Drill A): He must be busy / He might be asleep. She must be happy. So'ng biror noaniq vaziyat haqida 5 taxmin (must/can't/might) tuzing va javoblaringizni ushbu darsdagi qoidalar hamda javoblar kaliti bilan solishtiring.

11. Javoblar kaliti

Mashq 1: 1. must · 2. can't · 3. might · 4. must · 5. can't. Mashq 2: 1. must have rained · 2. can't have cheated · 3. might have left. Mashq 3: 1. be · 2. have · 3. be · 4. have. Mashq 4: She can't be home, the lights are off. / He must have forgotten. / It might/could be true, I'm not sure. / He must be tired. / She must have left already. Mashq 5: 1. He must be busy. · 2. That can't be true. · 3. She might be at home. · 4. It must have rained. · 5. I might have left my keys.

12. Xulosa va keyingi dars

Tez ma'lumotnoma:

Modals of deduction = ishonch darajasi (majburiyat EMAS):
  PRESENT: must be (aniq) | can't be (mumkin emas) | might/may/could be (ehtimol)
  PAST: must have + V3 | can't have + V3 | might/may/could have + V3
   salbiy xulosa = CAN'T (mustn't EMAS — mustn't = taqiq)
   must HAVE (NOT "must of")
   ehtimol = might/could (can EMAS); inkor ehtimol = might not (couldn't EMAS)
  must + BE + sifat/ot | must + HAVE + V3

Asosiy nuqtalar:

1. must (aniq) · can't (mumkin emas) · might/may/could (ehtimol).
2. Salbiy xulosa = can't (mustn't emas).
3. O'tmish xulosa = modal + have + V3.
4. must have (NOT "must of").
5. Ehtimol = might/could (can emas).

Bog'lanish: modal fe'llarning yangi vazifasi — xulosa/ehtimol — endi bilasiz (A2-17 majburiyat + bugun deduction). Keyingi dars modallarni yana kengaytiradi: had better, would rather, ought to, be supposed to — maslahat, afzallik va kutilgan xatti-harakat.

Keyingi dars — B1 — 18-dars: Modals — had better / would rather / ought to / be supposed to. "Borgan ma'qul" (had better), "Ko'ra qolgan afzal" (would rather), "Borishingiz kerak" (ought to), "Kelishi kerak edi" (was supposed to) — yangi modal iboralar.

Manba

R. Murphy, "English Grammar in Use" (must/can't/might — deduction, Units 28–31); Swan, "Practical English Usage" (modals: deduction, probability); Cambridge Dictionary; British Council LearnEnglish — "Modals of deduction".