1.The doctor did all ____ to save the wounded boy

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1.The doctor did all ____ to save the wounded boy
填he could ,在这里是不是all 后面的that 可以省略呢来引导定从?
2.Has ____ must be done been done?
a.all b.all that c.that d.it
这里为什么选B?如果修饰先行词 all的话,为什么不能像第一题那样省略 that 这2题区别在哪?第2题其他选项错在哪?

1、先看两题all的区别,1句中all做整个句子的宾语,它的前面的谓语动词是do；而2句中的all做整个句子的主语.
2、尽管先行词都是all,但1句中that是作从句的宾语（he could do that）,而2句中that是作从句的主语（that must be done）.理解了这一点也许你就明白了,因为引导词that等只有在从句中作宾语时才可以省略.
3、如此看来,2句中a后that不能省,c句整个主句缺少主语,d句不通.

1.The doctor did all ____ to save the wounded boy The doctor did all that he could to save the wounded boy.这句话 The doctor did all he could to save the wounded boy.这句话语法上有错英语从句题目1 THE DOCTOR did all ______to save the wounded boy.Awh 定于从句练习The doctor did all_to save de wounded boy.A.what he co All possible means____to save the wounded soldier The doctor has tried ____ to save the boy's life. The doctors did all they could_____(save)the boy 1.The doctors all went there ____(save) the sick boy.2.Liu M 1The doctor did what he could ___(save)the boy,but in vain.t The doctor did all he could so that he _____ save the soldie The doctor did what he could_the dying man.A.save B.to save