摘要
Ambiguity is a unique linguistic feature and is caused by many factors. This paper first introduces the definitions of ambiguity and then mainly illustrates ambiguity in our daily language usage in both English and Chinese from phonetic level and syntactic level. People can learn the relationships among those levels and grasp the rule of learning language. Thus, people can realize the complexity and importance of using language and know that it is not easy to express ideas accurately.
语言测试的真实性是测试研究的重要议题。商务英语作为专P3用途英语的一个分支，其测评方式应体现商务英语的特点和教学方式的变化，在测评过程中更加注重真实性原则。本文在探讨真实性理念的基础上，结合商务英语测评的实例，指出如何确定标准，如何设计真实性任务，从而进行真实性测评。
