Lesson 1 Grammar

Exercise 5. Aniqlang, qaysi gaplar matnga tegishli.

1. 
   The abacus and the fingers are the only calculating devices which are used today.
   
2. 
   Charles Babbage could also be called the father of computers.
   
3. 
   The Americans invented and built the first computer.
   
4. 
   Using transistors instead of vacuum tubes did nothing to increase the calculation speed.
   
5. 
   Today’s computers have fewer circuits than previous ones.
   

Exercise 6. Atamalarga mos keladigan ta’rifni tanlang.

1. 
   abacus a. used to help aim guns
   
2. 
   digital computer b. used in mathematics
   
3. 
   analog computer c. an instrument used for counting
   
4. 
   microminiaturization d. invented by the Americans in 1944
   
5. 
   logarithm tables e. the reduction of circuitry onto a chip.
   

Lesson 8.

Grammar: Past Indefinite va Past Continuous zamonlarini solishtirilishi. Text: Inside the system.

Step 1. Gaplarni o‘qing.
1. -What did you do yesterday?
-Well, I was cleaning my flat the whole day.
2. -Where were you yesterday? I phoned you.
-I was having a bath at that time and that’s why I couldn’t answer.


Step 2. Grammatika.

Past Indefinite (I did) 1. Ish-harakat o‘tgan zamonda bajarilganini ko‘rsatadi. I watched an interesting film last night. 2. Ish-harakatlar ketma-ketlikda bajarilganini ko‘rsatadi.