9. The method of claim 7 , further comprising: receiving a selection corresponding to at least one of the social circumstances; receiving a selection corresponding to at least one of the contextual situations; and generating the teaching material corresponding to the selected basic sentence pattern and the selected contextual situation under the selected social circumstance.
9. The method of claim 7 , further comprising: receiving a selection corresponding to at least one of the social circumstances; receiving a selection corresponding to at least one of the contextual situations; and generating the teaching material corresponding to the selected basic sentence pattern and the selected contextual situation under the selected social circumstance. 10. The method of claim 9 , further comprising generating the teaching material comprising at least one group of question and response sentences under the selected contextual situation, thereby handling the selected social circumstance defined by the selected contextual situation.