我补充一点~LZ你查的是什么字典?看仔细了没有!我查的中国人编的是
pass的过去式：passed；过去分词：passed或past
老外的只有一种：pass的过去式：passed；过去分词：passed
这两个词最容易混淆.下面给你几个例句.
Nearly a week passed.(passed动词)
He passed my house.(passed动词)
We walked past my house.( past介词 )
He told me about his past experiences.( past 形容词)
He semms to live in the past.( past名词 )