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Thread: need help

  1. #1
    richard001 Guest

    need help

    Hi teachers,

    _______, liquids can be changed into gases.
    A. Heating  B. To be heated  C. Heated  D. Heat
    About this one,I wonder why choose C.Heated but not B.To be heated?I think B is the correct one.
    Thanks.

  2. #2
    Tomasz Klimkiewicz is offline Senior Member
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    Re: need help

    No, B. is incorrect, I'm afraid. The point is, the phrase 'To be heated...' (same as the fuller form: 'In order to be heated...') indicates a purpose for which something is done. An example of a correct sentence using this phrase would be:

    'Some liquids need huge amounts of thermal energy to be heated.'
    or 'To be heated, some liquids need huge amounts of thermal energy.'

    In your example heating is the process capable of causing the liquid - gas phase transition (a cause, not purpose). So the correct choice is C. 'Heated, ...' (read: 'When heated,...').

    Hope the above helps.

    All the best,

    Tee Kay

  3. #3
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    Re: need help

    Quote Originally Posted by richard001
    _______, liquids can be changed into gases.
    A. Heating  B. To be heated  C. Heated  D. Heat

    About this one, I wonder why C. Heated is the correct choice. I think B is the correct one.
    Thanks.
    heated, a past participle in form, belongs to a relative adverbial clause, the constiutents of which can been omitted:

    1a. Liquids when they are heated can be changed into gases.
    1b. Liquids when heated can be changed into gases.

    2a. When they are heated, liquids can be changed into gases.
    2b. When heated, liquids can be changed into gases.
    2c. Heated, liquids can be changed into gases.

  4. #4
    Tomasz Klimkiewicz is offline Senior Member
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    Re: need help

    Casiopea,

    Greetings, and sorry for interfering. I think both of us were writing the reply at the same time, I was just a teeny-weeny bit faster with posting.

    Regards,

    Tomasz

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    Re: need help

    Quote Originally Posted by Tomasz Klimkiewicz
    Casiopea,

    Greetings, and sorry for interfering. I think both of us were writing the reply at the same time, I was just a teeny-weeny bit faster with posting.

    Regards,

    Tomasz
    That we did. By the way, you could never interfere. Your explanations are wonderful.

  6. #6
    Tomasz Klimkiewicz is offline Senior Member
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    Re: need help

    Thanks for the kind words. Very encouraging. I benefit from this forum very much, so I feel compelled to contribute with a reply whenever I can.

    TK

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    Re: need help

    Quote Originally Posted by Tomasz Klimkiewicz
    Thanks for the kind words. Very encouraging. I benefit from this forum very much, so I feel compelled to contribute with a reply whenever I can.

    TK
    I feel the same way.

  8. #8
    richard001 Guest

    Re: need help

    Thanks a billion to both of you.

  9. #9
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    Re: need help

    You're welcome.

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