The present simple tense

3 O'tgan zamonda should have +v3

Ex: you should have come Kelishingiz kerak edi

4 demand, order, suggest bilan ergashgan gapda

Ex: He demonded it should be done at once –U buni darhol bajarilishini talab qildi

5 Burch maslahat

Ex: You should help her
Modal verbs(any) +have + v3

• 
  O’tgan zamon taxminlar uchun:
  

1 Must have +v3- o’tgan zamonda ish –xarakat bo’lganligi haqida aniq tahmin

Izzat must have gone somewhere, because I saw him at the airport

2 Can’t have+v3- o’tgan zamonda ish –xarakat bo’lmaganligi haqida aniq tahmin

Izzat can’t have gone anywhere,because I have seen him this morning

3 Might /May have+v3- o’tgan zamonda ish –xarakat bo’lganligi haqida noaniq tahmin

When I went to my friend’s there was nobody at home They may have gone somewhere