“祈使句+or+陈述句” 前后表达的意思是对立的； “祈使句+and+陈述句” 前后表达的意思是统一的；两句都可转换成“If条件从句+主句”形式，注意要去掉or 和and。如：[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ kq3)i9.ZM.SW o#KFroG]

    (1)Put on your coat，or you'll catch a cold.[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ =(f{HXy}1pW ?| %1FroG]

    =If you don't put on your coat，you'll catch a cold.[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ W?f/}m F5kX!h&NeFroG]

    (2)Study hard，and you will pass the exam.[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ M  FEh?AE0QcFroG]

    =If you study hard，you will pass the exam.[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ f\Y{I9`
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