问题：表面结构和深层结构的区别是什么？

本题考查表面结构和深层结构的区别。

1.Surface structures correspond directly to the linear arrangements of sentences while deep structures correspond to the meaningful grouping of sentences.
表层结构直接对应句子的线性排列，深层结构对应有意义的句子分组。
2.Surface structures are more concrete while deep structures are more abstract.
表面结构更具体，深层结构更抽象
3.Surface structures gives the forms of sentences whereas deep structures gives the meanings of sentences. 表层结构给出了句子的形式，而深层结构给出了句子的意义。
4.Surface structures are pronounceable but deep structures are not.
表面结构是可发音的，而深层结构则不是。