这样说对,但这是比较正式/生硬的说法,一般口语不会用到,说出来会有点儿怪,好比一哥们儿跟你说“在下还未能作出决定”.语法是没错.语气错了.建议同样意思但比较随便的说法I can't decide/ I can't make a decision/ I...