【正确答案】正确答案：The subject concerning the study of meaning is called semantics. More specifically, semantics is the study of the meaning of linguistic units, words and sentences in particular.(2 points)The meaning of a sentence is obviously related to the meanings of the words used in it. But it is also obvious that the former is not simply the sum total of the latter. Sentences using the same words may mean quite differently if they are arranged in different orders.(2 points)For example; a. The man chased the dog. b. The dog chased the man. Even when two sentences mean similarly are as follows, there is still the difference in what Leech calls thematic meaning. For example; a. I"ve already seen that film. b. That film I"ve already seen.(4 points) This shows that to understand a sentence, we also need knowledge about its syntactic structure. In other words, this is an area where word meaning and sentence structure come together.(2 points)

【答案解析】解析：考查语义学中句子意义的概念。对意义进行研究的学科叫语义学(semantics)。更具体地说，语义学是对语言单位，尤其是词和句子的意义的研究。句子意义与句中使用的词的意义相关；但必须指出的是，前者并不仅仅是后者简单相加的总和。所含词语相同但词序不同的句子可能意义相当不同。例如，The man chased the dog．(人追狗)The dog chased the man．(狗追人)即使两个句子意义极为相似，它们之间在主题意义上仍然有差异：I"ve already seen that film．(我看过那场电影。)That film I"ve already seen．(那场我看过的电影。)这表明要理解一个句子，也需要知道它的句法结构。换言之，句子意义是词语意义和句子结构共同作用的结果。