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  1. #1
    moebachelor is offline Newbie
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    Smile I've got something to doubt

    I've got this question sounds "there....something wrong with the food"
    as for me there two option possible:
    1.must have been
    2.might be
    my tutor said *1, but why it uses have instead of has?
    thanks :)

  2. #2
    2006 is offline Banned
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    Re: I've got something to doubt

    Quote Originally Posted by moebachelor View Post
    Welcome!

    I've got this question sounds "there....something wrong with the food"
    as for me there two option possible:
    1.must have been
    2.might be
    my tutor said *1, but why it uses have instead of has?
    thanks :)
    Because "have" is preceded by the auxillary verb "must". So you have to keep the base form of the verb, which is "have".

    I have... I must have...
    (S)(he)(It) has... (S)(he)(It) must have...

  3. #3
    moebachelor is offline Newbie
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    Re: I've got something to doubt

    but i think "have" in that sentence is as auxiliary..
    ...
    are there any rules that modals should be followed by base form verbs??
    ...

  4. #4
    Raymott's Avatar
    Raymott is offline VIP Member
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    Re: I've got something to doubt

    Quote Originally Posted by moebachelor View Post
    but i think "have" in that sentence is as auxiliary..
    ...
    are there any rules that modals should be followed by base form verbs??
    ...
    Yes. Modals must be followed by the base form of the verb.
    Can you think of any counter-examples?

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