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    • Join Date: Nov 2006
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    #1

    Smile Present Tense

    What is the difference between

    I have had a cold for two weeks

    and

    I have a cold for two weeks

    What is the active voice of

    Smoking has been shown to be dangerous for peoples health

    Thanks!!!


    • Join Date: Aug 2006
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    #2

    Re: Present Tense

    Quote Originally Posted by muskrat View Post
    What is the difference between

    I have had a cold for two weeks

    and

    I have a cold for two weeks

    The difference is we don't use the present simple to discuss lengths of time.

    We can of course say,

    "I have a cold"

    because the present simple describes a state, and these states are thought of in English as "timeless". When we want to discuss the amount of time, the length of time that something has been going on, we use present perfect.

    I live in Bangkok. I've lived there for 3 years.


    What is the active voice of

    Smoking has been shown to be dangerous for peoples health

    Though we can put the sentence above in the active voice, it wouldn't [necessarily] be that natural. For one thing, I don't know for sure who the subject would be.

    Scientists/Researchers/People/Doctors/Health care professionals have shown that smoking is dangerous to peoples' health.


    Thanks!!!
    You're welcome, Muskrat.

  1. Soup's Avatar
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    #3

    Re: Present Tense

    I have had a cold for two weeks. continuity
    I have a cold for two weeks.
    I have a cold now. at the present time

    Smoking is dangerous for your health.


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    #4

    Re: Present Tense

    Quote Originally Posted by Soup View Post
    Smoking is dangerous for your health.
    Soup,

    Does your example, above, illustrate the active form of the one copied below?

    Smoking has been shown to be dangerous for peoples health
    Last edited by riverkid; 01-Oct-2007 at 23:10.

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    #5

    Re: Present Tense

    Riverkid is (as usual) correct. The smoking sentence is not passive voice. In the passive voice, the subject is moved to a prepositional phrase (usually) at the end of the sentence.

    The boy saw the dog. active

    The dog was seen by the boy. passive

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    #6

    Re: Present Tense

    We have one slogan in our campaign against smoking here:
    "Smoking is hazardous to health."
    Last edited by albertino; 02-Oct-2007 at 04:49.

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