英文句子分析 In his will,he requested that after payment of debts,taxes,and funeral expenses,the residue be given to his wife.这里的be given to 为甚么用be原型的形式?

解析：request 后接that 从句时，从句的谓语动词用虚拟语气"should + 动词原形"的形式。
例：He requested that he (should)stay for more days. 他请求再住一些天。
所以本句的完整形是：
In his will, he requested that after payment of debts, taxes, and funeral expenses, the residue （should) be given to his wife.
句子成分分析--he是主语
requested是谓语
that 后面是从句（虚拟语气）
after payment of debts, taxes, and funeral expenses, 是
从句中的状语
the residue 是从句中的主语
（should) be given to是从句中的谓语，用虚拟语气

英语中require suggest demand advise 等词表示建议，命令，要求等语气，从句中谓语动词用动词原形。这个知识点很常见，随便那本语法书上肯定有。

In his will,he 【requested that 】after payment of debts,taxes,and funeral expenses,the residue 【（should）be given to his wife】.
他在遗嘱里要求.括号里是句子的主体.
request that...(should) do sth...这里的do一定要用原型
类似还有pray ,let,suggest等等这些表命令等语气的情态动词,这个be的前面还可以加上should,也可以省略.

requested 后面是引出宾语从句，这里又是被动语态，当然be用原型.