The article, based on this , raises the view that language environment is the only basis to test and evaluate the advantage and disadvantage of speech activity, contains; language environment can help us convey as much speech information as possible by using as less language material as possible.

Writing, as one form of speech activity, is a complex psychological process.

Listening and speaking abilities are the basis for all speech activities, so the cultivation of listening and speaking ability should be put in the first place in foreign language teaching.

The process of writer s creation is in fact the process of speech activities, which aims at the creation of context.

From the analysis of some examples, we can see that context acts as a model for speech activities.

So the analysis of the speech event is another way for studying more illo.

Research on the Creating of Proper Educational Situations to Foster Children s Autonomous Learning in the Language Activity;

Because in his eyes, thinking results can be shown clearly in every language activity.

And the theory of language activity in his later philosophy is set up by the promotion of traditional spirit.