Based on the functional-notional theory, this thesis takes the methods of integrated, analytic research, inductively and qualitatively constructs the middle school English vocabulary network from perspective of functional-notional .

In the E/C translation of idioms,the idea function of language results in general translatability;the cultural function of language,relative untranslatability;and the aesthetic function of language,absolute untranslatability.

On expressing method of comparing function thoughts in technical Russian documents;