一、如何理解顾名思义,现在进行时就是指说话时正在进行的动作或发生的情况。如汉语说的“我在看书”“他在吃饭”“火车在行驶”“秘书在打字”等,在英语中都要用现在进行时来表达,因为它们所涉及的动作在说话的时刻都正在进行。二、构成与用法 First, how to understand as the name implies, when it is ongoing refers to the ongoing action or situation occurs. As the Chinese say “I am reading ” “He is eating ” “Train is driving ” “Secretary typing ”, etc., in English should be used to express now, because they are involved The actions are ongoing at the moment of speaking. Second, the composition and usage