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2018-05-13 04:30:33

• 使役动词和感观动词后接sb  do 如，let sb do     make sb do      have sb do
                                    see sb do      hear sb do     watch sb do     notice sb do
  其它动词后接sb to do 如   ask sb to do      tell sb to do     want sb to do      warn sb to do 
   help sb to do           allow sb to do 等。

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  2018-05-13 04:30:33

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