Question

以下5个句子

The accident happened in 1990 which is 10 years by now.
The accident happened in 1990 ，which is 10 years by now.
The accident that happened in 1990 is 10 years by now.
The accident happened in 1990 which has been 10 years by now
The accident happened in 1990 when has been 10 years by now.
以上句子哪些是对的，错的应该怎么改啊，谢谢了

Answer 1

By now 是现在完成时的标志,所以前三句都是错误的;对于四五两句,1990是先行词,在从句中作主语成分,而非时间状语,所以连词应是which而不是when.所以The accident happened in 1990 which has been 10 years by now 是正确的.

追问

The accident happened in 1990 which has been 10 years by now 能否在which前加逗号改为非限定定语从句，还有by now不是也可以用于一般现在时么，谢了

追答

by now 译为''到现在为止'',相当于''so far'',通常用于现在完成时,很少用于一般现在时,不要过于钻牛角尖,或者你可以再翻查一下曾经做过的笔记;若在which前加一个逗号,则构成非限制性定语从句,那么指的是逗号前面一整句话,即The accident happened in 1990 的定语是has been 10 years by now ,这样翻译不同,因为很明显has been 10 years by now 是1990的定语,是事件发生在距今10年的1990年.不知你是否赞同我的理解?

追问

I'll be waiting, all there's left to do is run ，这句歌词中all there's left是所有格还是there be句型，left是名词？谢谢了

追答

这是哪首歌的歌词?你确定你的是原版歌词?我觉得应该是I'll be waiting all there left to do is run

追问

如果是all there left to do is run的话，left在句中作何解释，过去分词么？谢谢了

追答

left是过去分词,看这样理解行不行:there all (left to do) is run.there地点副词作状语，all 作主语，left to do过去分词作后置定语　　　　eg:All Ican do is wait!能做的就只有等了！

Answer 2

The accident happened in 1990 which has been 10 years by now

Answer 3

同意楼上的意见。