Abstract
In this paper, I will introduce a method to explain sentence patterns and expressions vising metaphors. I will show an example of -NODA. -NODA has many usages, and numerating each usage is not enough to make learners able to use -NODA properly. Using a metaphor is an effective way to introduce -NODA, as it helps the learner to acquire a prototype image of -NODA. I suggest to classify the functions of -NODA into two categories, "textual metafunction" (Halliday & Hassan 1985) and "interpersonal metafunction" (Halliday & Hassan 1985), and use the metaphor of <the door to the underlying fact/meaning>, which reflects those two functions of -NODA.
