People feared that weakening a 21-year-old ban on the sale of ivory would encourage illegal hunting and hurt elephant populations.
【句意】二十一年来，象牙交易一直被明令禁止，人们担心削弱这一禁令会助长非法捕猎，导致大象数量减少。
【分析】that 引导宾语从句，从句中谓语动词是encourage和hurt，根据逻辑意义，可知encourage和hurt 的主语是动名词短语weakening a 21-year-old ban on the sale of ivory。
2. Whether you get along well with your professors or not has a huge effect on your self growth as it is a measure of how well you can respect authority and obey requirements.
【句意】你与教授相处是否融洽对你的自身发展起着重要的作用，因为这是衡量你是否尊重权威和服从要求的标准。
【分析】此句为复合句，句中whether引导主语从句，as 引导原因状语从句，how well 引导从句作介词of 的宾语。
3. Some companies have made the manufacturing of clean and safe products, to some degree, their main selling points and emphasize it in their advertising.
【句意】一些公司把生产的卫生的、安全的产品，从某种程度上说，当作他们的卖点，并在广告中强调这一点。
【分析】其实本句是一个“主语+谓语+宾语+宾语补足语”句型“make+ 宾语 + 宾补”，即“使……成为……”，只不过宾语和宾补被“to some degree”隔开而已。
4. The fact that members of one culture do not express their emotions as openly as do members of another does not mean that they do not experience emotions.
【句意】一种文化背景下的人不像另一种文化背景下的人一样直率地表达他们的情感，这一事实并不意味着他们没有这些情感。
【分析】本句的主干为The fact does not mean that ...，其中，that they do not experience emotions 是从句作mean 的宾语。
