Had yordamchi fe’lidan so’ng to’g’ri fe’lga ed

a)by 5 o’clock soat beshgacha, by Friday Jumagacha, by the 20th of December 20-dekabrgacha, by the end of the year yilning oxirigacha, by that time o‘sha vaqtgacha va boshqa vaqt ko‘rsatkichlari bilan.

b)When+Past Simple ish harakat bilan

When I arrived at the party, Jahon had already gone home.

2. 
   Past Perfect Present Perfectni o’tgan zamondagi ekvavalenti sifatida ishlatiladi.
   

• 
  a)He had fixed the radio. It was working/it worked( action: had fixed- happened in the past. Result :It was working/it worked- was also in the past
  
• 
  He has fixed the radio. It is working/it works( action: has fixed- happened in the past. Result :It is working/it works- is visible in the present
  

• 
  Izoh:U radioni sozlagan edi. Radio ishlayotgan edi( ish-harakat o’tgan zamonda sodir bo’ldi, Natijasi o’tgan zamonda ko’rnib turibdi radio yana ishlayotgan edi.