could all与all could 有什么区别 哪个对?

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all that he could 与what he could的区别~

all that he could 这里的 all 是先行词 that 是关系代词 定语从句是 he could
eg: All that he could do is just waiting.
what he could 是what引导的名词性从句 可以把它看个一个名词
eg: He did what he could do to make her happy.

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现在式与过去式的区别 could语气比can委婉一些

could all 里all作副词放在形态动词的后面修饰could
all could 里all 是代词作主语
两个都对,就是看具体用法。

一般意义上讲:could 提前。是疑问句的标志。
could 在后。就是陈述句里的情态谓语动词。

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连山壮族瑶族自治县13185311493: could all与all could 有什么区别 哪个对? -
计芸小儿:[答案] 一般意义上讲:could 提前.是疑问句的标志. could 在后.就是陈述句里的情态谓语动词.

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计芸小儿: 1 . Could you … ? (你 / 你们……好吗?)句型多用来表示请求,这里的 could 比 can 语气更加委婉、客气和有礼貌,肯定回答多为:OK / All right ! / Certainly ! / Of course . 否定回答常是:Sorry , I / we can't . (不用couldn't ).如: —Could...

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计芸小儿: 选A.前面那个空完整的应该是Tom did all that he could do,因为谓语动词是动词do的过去式,故后面could 后面的那个do省略了,避免重复.后面是一个动词不定式作目的状语,固定短语与某人相处融洽是 get on/ along well with sb.

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计芸小儿: 八年级上 Unit4---Unit6一.重点短语:1.take the subway 2.all over/around the world .be different from 4.on the school bus 5.study for a test 6.go to the doctor=see a doctor 7.have a piano lesson 8.the day after tomorrow 9.keep quiet /be quiet 10....

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计芸小儿: (1)With pleasure与All right, No problem. I'd like to等习语意义相同.用于别人求你做某事,你很乐意去做的时候.例如: -Could you post the letter for me ? -With pleasure. -你能否替我把这封信寄走?-愿意效劳. 简单讲,It's a pleasure用于事...

连山壮族瑶族自治县13185311493: all that he could 与what he could的区别 -
计芸小儿: all that he could 中的that引导【定语从句】 what he could中的what引导【名词性从句】

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计芸小儿: 选择A . 在此问题中:so that 引导目的状语,可以与in order that互用,意思是“为了,以便”,从句谓语中常用情态动词may / might,can /could,should,would等;主从句间连接紧凑,没有逗号相隔.本句翻译:为了挽救这个战士的生命,医生尽他所能,做了能做的一切.

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计芸小儿: 1 1 情态动词的语法特征 1) 情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生. 2) 情态动词 除ought 和have 外,后面只能接不带to 的不定式. 3) 情态动词没有人称,数的变化,即情态动词第三人称单数不加-s. ...

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