O’zbekiston respublikasi oliy va o’rta maxsus ta’lim vazirligi mirzo ulug’bek nomidagi o’zbekiston milliy universiteti

Mustaqil ish uchun vazifalar
XVIII. Gaplarni o’qing, ulardan so’roq va bo’lishsiz gaplar tuzing:

1. 
   I have written to him before.
   
2. 
   She had met him before.
   
3. 
   We had talked to him before.
   
4. 
   They had visited us before.
   
5. 
   I have received a letter from him before.
   
6. 
   He had done his homework before.
   
7. 
   My friend had played tennis before.
   
8. 
   Her sister had gone before.
   

XIX. Quyidagi gaplarning kesimini qaysi zamonda ekanligini aniqlang:

1. 
   They have equipped the laboratory with the modern equipment.
   
2. 
   These engineers have graduated from the college.
   
3. 
   The Universities have advanced courses in physics.
   
4. 
   The research workers had made a lot of experiments before they got the necessary results.
   
5. 
   The engineer had worked in the mine for many years before he became a research worker.
   
6. 
   They had been in Moscow before the conference.
   
7. 
   I had passed my exam by 5 o’clock.
   
8. 
   She had not passed her exam by that time.
   
9. 
   When I entered the room my friends had already put on their coats.
   
10. 
    She has already copied out the text.