before最好換成until,not...until...直到...才.那I won't believe you before I see it with my own eyes.對(duì)還是I won't believe you until I see it with my own eyes.對(duì)勉強(qiáng)對(duì)吧，其實(shí)后半部分強(qiáng)調(diào)看到的結(jié)果，所以用完成時(shí)。