they will be thankful for ( )you have done A what B that C which D 选什么 为什么they will be thankful for ( )you have doneA what B that C which D选什么 为什么为什么不选that呢 为什么人们总是说 不选that 是因为that

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theywillbethankfulfor()youhavedoneAwhatBthatCwhichD选什么为什么theywillbethankfulfor()youhavedoneAwhatBtha

they will be thankful for ( )you have done A what B that C which D 选什么 为什么they will be thankful for ( )you have doneA what B that C which D选什么 为什么为什么不选that呢 为什么人们总是说 不选that 是因为that
they will be thankful for ( )you have done A what B that C which D 选什么 为什么
they will be thankful for ( )you have done
A what B that C which D
选什么 为什么
为什么不选that呢 为什么人们总是说 不选that 是因为that 在宾语从句中不做任何成分 可是有些宾语从句中也会出现that 而且that 也会充当一定的成分 这是为什么呢

they will be thankful for ( )you have done A what B that C which D 选什么 为什么they will be thankful for ( )you have doneA what B that C which D选什么 为什么为什么不选that呢 为什么人们总是说 不选that 是因为that
选择A
They will be thankful for 【what 】you have done.
他们会感激你所做的.
what~在句中引导介词for的宾语从句.
而what在宾语从句部分中作宾语,you have done what.
根据句意“你做的什么”,就是what you have done.
而且,宾语从句中that不做成分,只是起到连接的作用.如果要连接词在句中起主宾表等,要用what.
例如:I can tell you that l like English.that 不做成分
that在定语从句是可以做成分的:I like the book that is on the table.这里that作在从句中做主语.

A
这是一个定语从句。WHAT充当前面的主语,后面的副词。只有WHAT 可以充当两种角色。

选A. 因为that在宾语从句中有时是可以省略的,相当于只是做了引导从句的作用,但是在一些特定的情况下,that又不能省略。还有就是what=all that,如果for 后面有一个things的话,就选that了,句子意思是,他们会因你做的事而感激!