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01. Morpheme is essential for analyzing the nature, formation rules of word to understand and grasp the morpheme well. Basic research about how to define, classify and verify morpheme has been done. As the smallest unit of language in combining the pronunciation and meaning together, morpheme is fairly important. It is also the smallest element of syntax analysis and can be divided into free morpheme and bound morpheme. In the year of 2006, Junyi Meng likewise did the research about the morpheme, the sound control and morphological control of sound speed. Morpheme is not only the smallest unit of the combining for pronunciation and meaning, and also the smallest element of the grammar analysis. Generally speaking, morpheme has only one form. However, it will change when influenced by the pronunciation and morphology. As the center of English, learners could understand and study the internal structure and word formation rules via morpheme. It is helpful for learners to adopt the words more correctly and effectively than usual.

At the same time, the researcher Xuezhong Zhang and Guizhen Gao have also concerns this topic. They both made the research about the factors which influence the morphological productivity. Productivity could be classified into strong productivity and weak productivity. Some productive elements could be used repeatedly and then make lots of new words while others would be only form rare words. However, even the strong productive elements could not make all the words they can be made. This is because the production of new words is influenced by the language element and verbal element. They have discussed the language factors that impact the morphological productivity through six chapters, which are phoneme restriction, morphological restriction, syntactical restriction, sematic restriction, pragmatic restriction and language blocking.

In lexicology, terminology of morphological structure is also needed to be noticed. The researcher Xianjian Lu from JIanghan has discussed this topic. Since the different schools of linguistic, terminology of words' morphological structure refers to a different scope. Some of them may be ambiguous or overlapped. Therefore, those linguists who study linguistic or morphology will be confused. So, the later scholars should induce the ambiguous terminology and it will be helpful and meaningful for a further study.

For Chinese English learners, acquisition and collocation of words is quite necessary. Haihua Wang and Guohua Chen have studied the characteristics when the Chinese learners using English strong words. Characteristics of Chinese learner using the strong words have been studied with the help of corpus linguistics. They took the research on the base of BNC and CLEC and three distinct stages of the Chinese learners using strong words. High school, English major and other majors use three steps. The results show that, for Chinese learners, the uses of highest adverb of degree are influenced by their language level. The higher their level is, the more they use the highest adverb of degree. In the period of high school, because they used too much 'almighty strong words' like, so, very and much. After weeding out these three words, the types and numbers of strong words become larger as their English level improves. The main difference is between 本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。