C． 表让步

　　He insisted on buying another car, which he actually didn‘t need……

　　他坚持要再买一辆车，尽管他并不需要。

　　My father,who thought it might not work,supported me.

　　尽管父亲认为这个办法可能不会起作用，但还是支持我。

　　D． 表目的

　　This company,which wants to get their new product sold well in the market,is trying hard to perfect its packing and workmanship.

　　为了使新产品在市场热销，这个公司正在全力改进工艺和外包装。

　　E． 表转折

　　She is quite considerate and kind,which her younger sister never is.

　　她非常善良，体贴，而她妹妹却从不这样。

　　To succeed in this area,one needs profound¹ knowledge and experience,which few has.

　　要想在这一领域取得成功，需要渊博的知识及丰富的经验，而很少有人能具备这两点。

　　F． 表条件或假设

　　A new product which has beautiful packing,good quality and advertising² may very likely be a hit in market

　　一种新产品，只要包装精美，质量过硬，宣传得力，就能在市场中热销。

　　Any one who works hard and never gives up will succeed.

　　任何人，只要努力工作永不放弃，就能够成功。