Ingliz tili grammatikasi

+ have + been able to ishlatiladi. Lekin bu juda kam uchraydi:
I could do it if I tried.
I should be able to do it if I tried.
I could have done it if I tried.
I should (would) have been able to do it if I tried.
ARALASH NOREAL SHART GAPLAR
Ba’zan shart (shart ergash gapdagi ish-harakat) o‘tgan zamonga taalluq-
li bo‘lib, natijasi (bosh gapdagi ish-harakat) hozirgi zamonga taalluq 
li 
bo‘lishi yoki aksincha bo‘lishi mumkin. Bunday gaplar aralash shart gaplar 
deyiladi:
If you had worked harder 
last year, you would know 
English well now.
Agar o‘tgan yili qattiqroq ishlaga-
ningizda edi, hozir ingliz tilini yax-
shi bilardingiz.
Yuqoridagi gapning shart gapida ish-harakat o‘tgan zamonga taal luq li 
va  Past Perfect ishlatilgan, bosh gapida esa ish-harakat hozirgi zamon ga 
taalluqli va would + V ishlatilgan.
If he knew English well, he