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  1. hector51's Avatar

    • Join Date: Dec 2005
    • Posts: 241
    #1

    some questions to ask

    hi teachers!

    1."there are about 500 spicies of poisonous snakes,200 of them/whom are harmful to man"

    I know the answer is "whom",but I don't know why "them" is incorrect,could you please explain it to me?

    2." a sleeping person changes the positions of his entire body at least a dozen of times during about eight hours of sleep"

    I think there is something wrong with this sentence,isn't there? can I say "a dozen times" or "dozen of times" instead ?

    thanks so much!

    • Member Info
      • Native Language:
      • Arabic
      • Home Country:
      • Tunisia
      • Current Location:
      • Tunisia

    • Join Date: Apr 2007
    • Posts: 292
    #2

    Cool Re: some questions to ask

    why don't you say " Dozens of times"
    I guess it would be okay.


    • Join Date: Oct 2006
    • Posts: 19,434
    #3

    Re: some questions to ask

    Quote Originally Posted by hector51 View Post
    hi teachers!

    1."There are about 500 species of poisonous snakes, 200 of them/whom [which] are harmful to man." Snakes are not people, so do not need "whom". You can use "them", but only if you make this two sentences, with a full stop between snakes and 200

    I know the answer is "whom",but I don't know why "them" is incorrect,could you please explain it to me?

    2." A sleeping person changes the positions of his entire body at least a dozen of times during about eight hours of sleep"

    I think there is something wrong with this sentence,isn't there? can I say "a dozen times" or "dozen of times" instead ? Yes - "a dozen times" or "dozens of times" would be perfectly correct.

    thanks so much!
    ..

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