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    #1

    past continuous

    I was thinking about what I had to buy from that market.
    I was thinking about what I should buy from that market.
    Which one is correct? Maybe both of them and it depend on the situation?

  1. 5jj's Avatar
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    #2

    Re: past continuous

    Quote Originally Posted by English4everyone View Post
    I was thinking about what I had to buy from that market.
    I was thinking about what I should buy from that market.
    Both are grammatically OK.

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    #3

    Re: past continuous

    How?
    Sorry, I can't undersatnd easily. May I ask you to explain it?
    Thanks very much.

  2. emsr2d2's Avatar
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    #4

    Re: past continuous

    Quote Originally Posted by English4everyone View Post
    How?
    Sorry, I can't undersatnd easily. May I ask you to explain it?
    Thanks very much.
    Do you think that they are not grammatically OK?

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    #5

    Re: past continuous

    No I think because we are talking about past and here ''thinking'' happens in the past, we have to use had to. How is it correct to use should? Just in some special situations?

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    #6

    Re: past continuous

    "Should" is still "should" even when referring to the past.

    I wonder what I should do.
    I wondered what I should do.

    It is not the same for "have to", meaning "must".

    I wonder what I have to do.
    I wondered what I had to do.

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    #7

    Re: past continuous

    Thanks a lot.
    But my teacher said the past form for have to, has to, should & must is had to. So it isn't correct?

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    #8

    Re: past continuous

    Quote Originally Posted by English4everyone View Post
    Thanks a lot.
    But my teacher said the past form for have to, has to, should & must is had to. So it isn't correct?
    It entirely depends on the context. In your sentence, the verb which is moved into the past tense is "to wonder", followed by "should". If the sentence had been:

    I should buy some apples. (Present tense)

    ...it would actually be quite difficult to change that into the past tense. In my opinion, again, saying "I had to buy some apples" is not a past tense version of "I should".

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