参考答案

1）“近年来公司加大生产规模,去年的轿车销售总量占到了华南地区汽车销售总量的70%”属于结构性障碍中的“规模经济”；“威龙公司已经牢牢控制了华南地区的小轿车销售网络，别的汽车制造企业想进入华南市场，只能靠低价竞争战略”属于结构性障碍中的“现有企业对关键资源的控制”；针对F集团的反击行为，属于行为性障碍中的“进入对方领域”。
2）五种竞争力分别是：潜在进入者的进入威胁；替代品的替代威胁；供应者、购买者讨价还价的能力；产业内现有企业的竞争。
英语答案：
（1）In recent years，the company has enlarged the scope of business，the sales quantities for saloon cars in last year has accounted for 70% of total sales quantities in Southern China，it relates to economies of scale in structural impediment；Wei Long company has already firmly control the sales network relating saloon cars in Southern China，for other car manufacturers，in order to enter into the market in Southern China，the cost leadership strategy would be adopted，it relates to controlling of the key resources for existing companies in structural impediment；For the action taken by F group，it relates to entering into counterparties' area in structural impediment.
（2）Five forces include threats from potential entrants；threats from substitutes；bargaining power of suppliers and buyers；Competition between existing companies within the industry.