The Present simple tense

To skate is pleasant.
Perfect Infinitive (ham active, ham passive)
1.Perfect Infinitive gapning kesimidagi fe’l ifodalagan ish-harakatdan oldin sodir bo’lgan ish-harakatni ifodalaydi.
He seems to have finished his work.
This writer is said to have written a new novel.
2. may va must fe’llaridan keyin kelib ish-harakat allaqachon sodir bo’lgan degan taxminni ifodalash uchun.
He must have forgotten about it.
3. should, would, could, might, ought to, was (were) to modal fe’llaridan keyin kelib bajarilishi lozim bo’lgan va bajarilishi mumkin bo’lgan, lekin haqiqatda bajarilmagan ish-harakatni ifodalaydi.
He should (ought to) have gone there.
You could have helped him.
4. to intend, to hope, to expect, to mean fe’llarining o’tgan zamondagi shaklidan keyin kelib ish-harakatni sodir qilishga qasd, umid bo’lishiga, shu ish-harakatni sodir etilishini kutishga qaramay shu ish-harakat sodir bo’lmaganligini bildiradi.
I intented to have finished my work last night.
I hoped to have met him there.


Continuous va Perfect Continuous infinitive


1. Continuous infinitive gapning kesimidagi ish-harakat bilan bir paytda davom etgan ish-harakatni ifodalaydi.
That firm is reported to be conducting negotiations for the purchase of sugar.
The weather seems to be improving.
2. Perfect Continuous Infinitive gapning kesimidagi ish-harakatdan oldin uzoq vaqt davomida davom etgan ish-harakatni ifodalaydi.
They are said to have been conducting negotiations for a long time.
He is known to have been working on this problem for many years.
1.Quyidagi fe’llardan keyin “infinitive” dan foydalaniladi: