| The future tense is an important part of the tense system.The future tense marker is an important symbol for expressing the future tense in Chinese,and it is also a difficult point in teaching Chinese as a foreign language.However,through searching the data,it is found that the future tense marker words are not mentioned much in the teaching of Chinese as a foreign language,and the systematic research is seldom carried out.The origin and evolution of "yao,lai,qu,na,and hui" are analyzed,and its grammaticalization process is found out,which provides a strong proof for the future tense meaning of future tense markers.These future tense markers not only have the function of expressing the meaning of the future tense,but they also have this function due to the continual blurring of the meaning of the verb.Based on the study of future tense system,this paper expands and analyzes the future tense marker words derived from the five types of verbs "yao","lai","qu","na" and "hui",and their grammaticalization process.The process of transformation and usage conditions were studied,and the similar future tense marker words were compared and analyzed,and it was found that the grammatical meanings expressed by different future tense markers were different,and the usage conditions were also different.In order to find out the error phenomenon of foreign students in the use of future tense marks,and analyze the reasons for the error,this paper collects the error corpus in the HSK dynamic composition corpus,and finds out four types of errors,they are misuse,misaddition,omission,and misordering.Bias analysis found that the negative transfer of the second language learner’s mother tongue will have a certain negative impact on the mastery of knowledge points;the complexity of the target language can easily lead to the generalization of knowledge points,resulting in confusion of word meanings and analogy of rules;the knowledge points of the textbook are less involved,the grammar points are not explained comprehensively,and the exercises are not diversified enough;students’ learning strategies and learning psychology have certain influences,which are the reasons for the bias.Aiming at the types and causes of errors in future tense marker words,this paper puts forward four teaching suggestions for future tense marker words in teaching Chinese as a foreign language on the basis of ontology research and error analysis.:construct syntactic structure,intuitively show vocabulary usage;compare the meanings of words in Chinese and foreign countries and identify and analyze synonyms;organize and build situations,and use words in combination with contexts;design application exercises to exercise Chinese language sense.These teaching methods can provide more teaching references for teaching Chinese as a foreign language,and to a certain extent make up for the blank of this content in teaching Chinese as a foreign language.The teaching of marker words in the future tense should be given enough attention,and further research should be continued to explore more teaching methods,so as to provide more practical and valuable help for teaching Chinese as a foreign language. |