jack：Frankly speaking,i didnot know much about that.3926 想问：Frankly speaking 这是一jack：Frankly speaking,i didnot know much about that.3926想问：Frankly speaking 这是一个对话.说话的是jack

jack：Frankly speaking,i didnot know much about that.3926 想问：Frankly speaking 这是一jack：Frankly speaking,i didnot know much about that.3926想问：Frankly speaking 这是一个对话.说话的是jack
jack：Frankly speaking,i didnot know much about that.3926 想问：Frankly speaking 这是一
jack：Frankly speaking,i didnot know much about that.3926
想问：Frankly speaking 这是一个对话.说话的是jack

jack：Frankly speaking,i didnot know much about that.3926 想问：Frankly speaking 这是一jack：Frankly speaking,i didnot know much about that.3926想问：Frankly speaking 这是一个对话.说话的是jack
是坦白的说的意思~
类似的非谓语开头的短语还有：honestly speakiing 老实说 considering 考虑到...

坦白地说