英语翻译如题buy不是瞬间动词么？在完成时里面能说has bought 我只听过has keep.如果要把瞬间动词变成延

不是.
瞬间动词转换成延续性动词有既定的规则和对应.
比如：have—keep leave—be away
而此处的buy 它的形式主语是“我父亲” 而不是“我”
所以此处的“buy”无需变动
即：My father has bought a new bike for me.
或者更换形式主语为“我” 但较复杂
即：My father has made me have a new bike.