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

分析 告訴老師你的學(xué)習(xí)問題,從理論上講,他們會幫助你的.

解答 答案:C.
這里使用了固定句型:祈使句+and/or+簡單句.祈使句+and+簡單句相當(dāng)于if引導(dǎo)的肯定的條件句,如:Use your head and you will find a way.=If you use your head,you will find a way.祈使句+or+簡單句相當(dāng)于if引導(dǎo)的否定的條件句,如:Work hard or you won't pass the exam.=If you don't work hard,you won't pass the exam.所以選C.

點評 句型總結(jié):
(1)祈使句(表條件)+or else/or/otherwise+主句(表結(jié)果)…"否則…,要不然…"
(2)祈使句(表條件)+and+主句(表結(jié)果)
例:Please call me up before you come,otherwise/or else/or we might be out.你來之前打個電話,否則,我們也許會出去.
   Work hard and you will make progress every day.好好學(xué)習(xí),天天向上.

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