Context Theory Under The Guidance Of The High School English Classroom Vocabulary Depth Knowledge Acquisition Research

Vocabulary has been upgraded as a component of language proficiency as it lays foundation for language learning. The depth of word knowledge is a multi-layer part with the core of word meaning, including collocation, association, polysemy and word formation,; etc. The breadth alone can't represent word learning ability, that requires the improvement of extensive lexical acquisition. Learners should have a general knowledge of where to use and how to use the words, let alone the word formation. In the latest decade, more contexts and topics are highly used in the college entrance exams. Thus, the analysis is aimed to apply Context Theory in senior high English class. How do sentences, sections and chapters work in words learning and whether context has any effect on the depth of word knowledge including input and output, long-term memory and short-term memory. The analysis also does some research on lesson planning by discussing the specific ways and effectiveness of using Context Theory. Also, suggestions and principles are made.Therefore, teaching applications and evaluation can be drawn to make people better understand the role of extensive vocabulary acquisition in senior high schools.The research indicates the following conclusions:The first is after the empirical study, students improved apparently in polysemy and word formation when they learn the words in sentences, sections and chapters. The students have a better short-term and a long-term memory through this context way. Controlled group students fail to remember new words after a long time because they don't form a mental conception about the words. The second is that students in experimental group have more logics in writing. They are used to applying the examples mentioned in sentences, sections and chapters. The third is some effective and specific applications on vocabulary teaching which are meaningful and effective are mentioned. Several principles are also raised in this analysis. Therefore, mapping a lexical network under context theory is helpful for the vocabulary learning. Context-dependent teaching helps form mental lexicon which leads to long-term retention of the words.