Entirely in the spirit of protective support,could I suggest you pass on an appropriate comment to the personnel concerned.
1.这句话中的Entirely in the spirit of protective support应该放在哪个位置才是表达:写信人只是建议收信人给“有关人士”以“保护性的支持”？
答：可以这样：Could I suggest you, entirely in the spirit of protective support, pass on an appropriate comment to the personnel concerned.
2.和3：
答：因为Entirely in the spirit of protective support放在句首，应该是修饰主语I的行为，即修饰主句 I suggest you pass on an appropriate comment to the personnel concerned. 在特定上下文中，也有仅修饰主语I的可能。
