According to this model, we select words from the thesaurus (our mental dictionary) and string them together according to the phrase structure rules. The sentence structure at this stage is a very deep structure, and further operations will be performed according to the conversion rules. The actual form of the sentence is the surface structure, which is expressed in phonetic or written form. If the model is correct, writing a language's TG grammar means that two sets of rules must be worked out and then followed by users of the language.
正在翻译中..