pass是经过,passed是pass的过去、过去分词形式,past是副词、名词、介词和形容词。I will pass a house everyday.I passed a house yesterday.I remember my past.I walked past the house.The past years is my treasure.I miss the past years.
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past,过去(的)。比如:in the past, communication among rural areas can be extremely hard.过去,边远地区的通讯极度困难。
passed,pass的过去式。i passed the exam with ease.我轻松通过了考试。
passed也用在被动语态中,如:The draft was passed by the Senate。参议院通过了这项草案。