参考答案：

南山公司独立董事的职责中所包含的四种角色及体现情况：①战略角色。公司独立董事张某对公司战略提出了建议，体现了独立董事的战略角色。 ②监督或绩效角色。公司独立董事李某就大股东占用公司资金问题发表意见体现了监督角色。③风险角色。公司独立董事张某就公司内部控制、风险管理方面发表意 见，有利于公司设有充分的内部控制系统和风险管理系统。④人事管理角色。独立董事张某就总经理任免和公司高管薪酬发表了意见，体现了人事管理角色。　　英文答案：    The four different roles embedded in the duties of the independent directors of Nanshan Company:①Strategic role. Independent directors are members of the board of directors, so they have the right and responsibility to contribute to the success of the company’ strategy. As an independent director, Zhang recommended on company’s strategy, which had reflected the strategic role of independent directors.　　②Supervision or accountability role. Independent directors should oversee the management’s responsibility for decision-making and performance of the company. Independent directors mitigate the agent problem of management for the interests of shareholders. As an independent director, Li expressed his view on the largest shareholder’s unauthorized utilization of the company’s funds, which had reflected the supervision role of independent directors.　　③Risk management role. Independent director Zhang expressed his view on internal control and risk management of the company. This helps to ensure that the company has proper internal control system and risk management system.　　④Personnel management role. Independent directors should have the duty of personnel management of executive directors. Independent director Zhang expressed his view on appointment of general manager and management compensation, which reflected his duty of personnel management.