【英语】来来来,

问题描述:

【英语】来来来,
(Not knowing) how to open the bottle,she came to ask for help.
为什么不能用(Not having known) 这个句子应该有强调先不知道怎么打开后再寻求帮助啊!我还看到另一道题目就是这样的,如下
Not having met with such a great a disaster,they did not know what to do

第一个例子,她来的时候仍是不知道.所以两动作应算为同一时间段.
而后个例句,两个动词有明显的先后顺序.
比如前一个例子,你要帮她开瓶子,会问
"Why don't you open the bottle yourself?"
你说她会回答
"I don't know how to open it."还是
"I haven't known how to open it.