Английский язык. Иваненко Т.И. - 60 стр.

    7. We repair the machine tools frequently.
                         PASSIVE VOICE
     To make a passive sentence in the simple past tense we use
the past tense of the verb to be with the past participle.
     Example The goods were exported to Asia.

    B. Now write the sentences in Exercise 2A in the past tense.
    a) _______________________________________________
    b) _______________________________________________
    c) _______________________________________________
    d) _______________________________________________
    e) _______________________________________________
    f) _______________________________________________
    g) _______________________________________________
    h) _______________________________________________

    Who does what?
     Sometimes we use the passive form with the word by, to
show who or what performs the action.
     Example The government subsidizes the production cen-
tre (active). The production centre is subsidized by govern-
ment (passive).

    EXERCISE 4. Change the sentences into the passive form
with by.
    Example: Farmers grow crops. Crops are grown by farmers.
    1. Lasers weld the microcomponents.
    2. Robots assemble the plants.
    3. Time-and-motion experts monitor efficiency.
    4. Craftsmen hand-build our traditional products.
    5. Skilled workers operate the more sophisticated tools.

     EXERCISE 5. Explaining instructions
     А. Look at these instructions. The operator has difficulty un-
derstanding the terms, so the supplier’s representative «trans-
lates» the terms into more conversational English. Try to match
each difficult term with its conversational translation.
     Example: Invert the terminal block means Turn over the
                                60