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4.______ your teacher the problem with learning,theoretically,and they will help you.(  )
A.TellingB.To tellC.TellD.Having told

分析 告诉老师你的学习问题,从理论上讲,他们会帮助你的.

解答 答案:C.
这里使用了固定句型:祈使句+and/or+简单句.祈使句+and+简单句相当于if引导的肯定的条件句,如:Use your head and you will find a way.=If you use your head,you will find a way.祈使句+or+简单句相当于if引导的否定的条件句,如:Work hard or you won't pass the exam.=If you don't work hard,you won't pass the exam.所以选C.

点评 句型总结:
(1)祈使句(表条件)+or else/or/otherwise+主句(表结果)…"否则…,要不然…"
(2)祈使句(表条件)+and+主句(表结果)
例:Please call me up before you come,otherwise/or else/or we might be out.你来之前打个电话,否则,我们也许会出去.
   Work hard and you will make progress every day.好好学习,天天向上.

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