市场调查是企业制定广告策略时的重要依据，而企业动用众多的人力物力和精力得到的市场调查结果是公开的，调查人员无需遵守保密条约，可以透漏给竞争企业。

In Chinese when someone breaks a bowl or a plate the host or the people present are likely to say“碎碎（岁岁）平安”as a means of controlling the forces which they believes feel might affect their lives. Which functions does it perform?

Language has many functions. We can use language to talk about itself. This function is __________.

F. de Saussure, who made the distinction between langue and parole in the early 20th century, was a French linguist

A study of the features of the English used in Shakespeare’s time is an example of the diachronic study of language.