I （主语）//have excluded（谓语动词）// him（宾语）//（原因状语从句） because,//（让步状语从句）while his accomplishments may contribute to the solution of moral problems,//（让步状语从句的主句）he has not been charged with the task of approaching any but the factual aspects of those problems

参考译文：我之所以把他排除在外，是因为尽管他的成果可能会有助于解决道德问题，但他承担的任务只不过/仅仅只是研究那些问题的事实层面。

重点知识点解析如下：

(1)主句：I have excluded him

(2)原因状语从句：because ,while his ccomplishments.(含有一个让步状语从句）

(3)让步状语从句：while his accompliments may contribute to the solution of moral problems

(4)让步状语从句主句：he has not been charged with the task of approaching any but the factual aspects of those problems(即他所承担的任务不是解决任何道德问题，而是处理/研究这些问题的事实层面。/他承担的任务只不过/仅仅只是研究这些问题的事实层面。)

(5)be charged with意为“被控”或“承担，负责

He also was charged with lying to federal officers.

他被控向联邦官员撒谎。

He was charged with the responsibility of designing all new public buildings.他负责设计所有新建的公共建筑。

(6)approach为vt./vi.意思“接近；处理

The officials in Honolulu knew disaster was approaching.

檀香山的政府官员知道灾难即将到来。

How should I approach the issue and solve it?

我该怎么处理并解决这一问题呢？

(7)not..any but sth 除了..任何都不，意思相当nothing but=only 仅仅/只是

(8)the factual aspects of those problems那些问题的事实层面