词汇是语言的建筑材料,词汇教学是英语教学的重要任务之一。在高中阶段,词汇教学更显重要。《普通高中英语课程标准(实验)》(教育部,2003)对高中学生(7-9级)在词汇知识方面的要求是:学会使用4500个单词和一定数量的习惯用语或固定搭配。但在教学中,我们经常听到学生抱怨:词汇量过少、单词记不住、记住的单词不会用、单词的形式变换出错等等。这与学生在记忆单词时侧重于记住这些词汇的原形,而不涉及词汇的形式变化,尤其是 Vocabulary is the language of building materials, vocabulary teaching is one of the important tasks of English teaching. Vocabulary teaching is even more important in high school. Common Upper Secondary English Curriculum Standard (Ministry of Education, 2003) The requirement for high school students (Levels 7-9) in lexical knowledge is to learn to use 4500 words and a certain number of idioms or fixed matches. However, in teaching, we often hear the student complain about: the vocabulary is too small, the words can not remember, remember the words will not be used, the word change the form of mistakes and so on. This is related to the fact that students remember words when they focus on remembering the original forms of these words without involving the formal changes in vocabulary, especially