By analyzing the influences of cultural connotation of some words in vocabulary learning, this article is to find out the internal relations in cultural factors, vocabulary understanding and language learning.

On enlightenments of mental lexicon to English vocabulary teaching;

Study of mental lexicon and foreign language teaching;

The theories of mental lexicon explain how words are organized and accessed in human brain from the angle of psycholinguistics,studies of which provide vital enlightenments to English vocabulary teaching.

Such criteria varies in lexical theory and each criterion is hard to find its thorough application.

In reference to the requirements of new English Curriculum Criteria,along with the practical situations in lexicon teaching in senior schools,some general principles on lexicon teaching are clarified in the paper,and methods for lexicon handlings are probed with SEFC Book 3A Lesson 15(2) s a sample text.