長難句：i have excluded him because,while his accomplishments may contribute to the solution of moral problems,he has not been charged with the task of approaching any but the factual aspects of those problems.

重點詞匯： to be charged with，approach

■答案■

1、長難句：我之所以把他排除在外，是因為盡管他的成果可能會有助于解決道德問題，但他承擔的任務只不過是研究這些問題的事實層面。

分析： 主句是i have excluded him，而because所引導的從句又包含一個主從結構，其主句是he has not been charged… those problems，從句是while his accomplishments… moral problems。the task of approaching any實際表示the task of approaching any moral problems but the factual aspects of those problems，即他所承擔的任務不是解決任何道德問題，而是處理（研究）這些問題的事實層面。