| "shi...de" is an important grammar in teaching Chinese to Speakers of Other Languages.However,the academic circles mainly focus on theoretical research.Although there are some teaching researches,it rarely involves instructional design and practice under the guidance of systematic teaching methods.The article selects a scientific theoretical system in line with the teaching of Chinese grammar-"Trinitarian Grammar",combines the core ideas of the theory with the marked emphatic sentence "shi...de",and explores the teaching links of this language point.The article uses Corpus Analysis,Comparative Analysis,Quantitative Data Statistics and so on.And it summarizes the theoretical content of "Trinitarian Grammar",selects the research object of "shi" for the article,and analyzes the formal structure of " shi...de " 、the function of " shi...de " and typical context of " shi...de ",etc.And we also sort out and analyze the wrong sentences in the interlanguage corpus.At the end of the article,based on the above content,the teaching was designed and practiced.The article points out that applying the theory of "Trinitarian Grammar" to the teaching of "shi...de" grammar will enhance learners’ grammatical cognitive ability,improve learners’ learning efficiency,reduce students’ grammatical points’ error rate,and improve the actual communicative ability of the language point of the student."Structure" can help students understand the requirements of each component of the "sentence" and write grammatical sentence;"Function" can help students understand the scope of the content of the "shi...de";"Typical Context" can help students clarify the environment,so that students can learn something useful.Finally,according to the teaching,the article proposes teaching content arrangement,formal structure teaching,functional role teaching,communicative task setting and typical context teaching for the "shi...de" sentence under the theory of "Trinitarian Grammar". |