which的用法分析求助The development of mechanical timepieces spurred

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  • in which === where

    I went to the park in which I walk my dog.

    I went to the park where I walk my dog.

    whose === [ of which.{things only}]

    The book whose cover is green is mine.

    The book of which the cover is green is mine.

    *** when === in/ on /at + which

    I know the time when he will come.

    I know the time on which he will come.

    at which === where

    The hotel at which we stayed was very comfortable.

    The hotle where we stayed was very comfortable.

    I still remember the day + [when /on which /that]

    + we met for the first time.

    *** when ===on the day

    *** which (N)===the day,on which ===on the day === that

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