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在英语里up的用途极为广泛；它是副词虚助词，也是介词，词义不止一个。 下面是up的六项主要用途： 一、作副词或介词，表示向上，如： （1） The monkey climbed up the tree. （2） Two boys helped the old man up. （3） I cant hear you. Can you please speak up? 二、作副词或介词，意思由远处到近处、由南到北、由小地方到大地方，如： （4） The dog-trainer led the dogs up the street. （5） We would like to go up to town. （6） This train is running up north. （7） They have driven all the way up to the capital of Malaysia. 三、表示完毕。或起来，如： （8）The hungry dog ate up all the leftover food. （9）The library staff piled up the books in good order. 用动词+up来表示做好、做完的例子很多，常见的还有这些： Button up, clear up, dry up, mix up, tie up, wrap up, pack up, tidy up, use up等。 四、可有可无的up，如： （10） The road to the school was blocked （up） for some time because of the flood. （11） Please fill （up） this form and then give it to me. | 
