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Thread: also vs either

  1. #1
    keannu's Avatar
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    Default also vs either

    If there's a negative sentence before, don't you use "either" in the next negative sentence? But sometimes I can see "also", so I don't know the difference.

    78)This kind of sleepwalking is known as "zzz-mailing". Unlike simple sleepwalking, patients do complex activities like logging into an email account and writing messages. How can they correctly remember their usernames and passwords while asleep? Doctors aren't sure about this. They also don't know exactly what causes the problem....

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    Default Re: also vs either

    [I am not a teacher]

    There is very little or no difference between these:

    The doctors aren't sure about this. They also don't know...
    The doctors aren't sure about this. They don't know ... either.

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    Default Re: also vs either

    I never knew that "also" and "either" are interchangeable. If "also" can also be used in negative sentences, what I learned about the difference between the two is wrong.

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    Default Re: also vs either

    Quote Originally Posted by keannu View Post
    I never knew that "also" and "either" are interchangeable. If "also" can also be used in negative sentences, what I learned about the difference between the two is wrong.
    I wouldn't say they are interchangeable. They can appear in different sentences to convey similar meanings.

  5. #5
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    Default Re: also vs either

    Quote Originally Posted by keannu View Post
    If there's a negative sentence before, don't you use "either" in the next negative sentence? But sometimes I can see "also", so I don't know the difference.

    78)This kind of sleepwalking is known as "zzz-mailing". Unlike simple sleepwalking, patients do complex activities like logging into an email account and writing messages. How can they correctly remember their usernames and passwords while asleep? Doctors aren't sure about this. They also don't know exactly what causes the problem....
    Doctors aren't sure about this, nor do they know exactly what causes the problem.
    Doctors aren't sure about this. They also don't know exactly ...
    Doctors aren't sure about this. They don't know exactly what causes the problem either.

    As a side note, I had never heard of "zzz-mailing" before. Note that it really only works in AmE, where the letter "z" is pronounced "zee" so the phrase is pronounced "zee-mailing" which does indeed sound like "emailing". However, in BrE, "z" is pronounced "zed" so that phrase either says "zed-mailing" which makes no sense or simply uses the buzzing sound "zzz" (like a bee) followed by the word "mailing", which doesn't make sense either.
    Remember - correct capitalisation, punctuation and spacing make posts much easier to read.

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