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求一道语法题的解析Once they had fame,fortune,secure futures; now (all

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求一道语法题的解析
Once they had fame,fortune,secure futures; now (all that is left) is utter poverty.请问括号里的all that is left为什么不是all what is left?语法上怎么讲?
求一道语法题的解析Once they had fame,fortune,secure futures; now (all
Once they had fame,fortune,secure futures; now (all that is left) is utter poverty.请问括号里的all that is left为什么不是all what is left?语法上怎么讲?
答:句意:他们曾经有名望、有财富,有无虑的未来,而现在剩下的只是彻贫.
all是个代词,后跟定语从句,用that引导.what不是关系代词,不能引导定语从句.
比较:
The doctor did what he could (do) to save the girl's life.
那医生做了他所能做的(事情)来救那女孩的生命.
what:连接代词,引导名词性从句(宾语从句),相当于:the things that-定语从句.
The doctor did all (that) he could (do) to save the girl's life.
那医生做了他所能做的一切来救那女孩的生命.
all是“一切”,作did的宾语,that引导一个定语从句,在从句中作省掉的那个do的宾语,所以可以省略.
all that is left 就是:所剩相的一切,that是关系代词,引导限制性定语从句,在从句中作主语,不能省略.
不过,all .is ...,译作:只是.
如:All we could see from the plane is the white clouds gathered beside us which stretches away as far as the eye could see