Consider the expressions: Let\'s forget our past difficulties, I don’t want to talk about my past, Some of his poems are past comprehension, and I watched the people hurry past. They show that past is used in English as (a. an adjective, a noun, an adverb and an preposition b. a preposition, a noun, an adjective and an adverb c. a preposition, a noun, an adjective and a verb d. an adjective, a noun, a preposition and an adverb). (A)a (B)b (C)c (D)d
Let’s forget
our past difficulties. → past為形容詞。 [讓我們盡釋前嫌]
I don’t want to talk about my past. → past為名詞。 [我不想談論我的過去。]
Some of his poems are past comprehension. → past為介係詞。 [他的詩,有些很難理解。]
I watched
the people hurry past. → past為副詞。 [我看著人群匆匆離去。]