1.Some Basic Concepts(基本概念) Errors(错误) 1. grammatically incorrect 2.grammatical misuse 3.systematic and regular deviations from correct form of language. E.g.He like reading.She smiling istakes(失误) 1.grammatically correct but improper in the communicative context. 2.Pragmatic misuse 3.not systematic,not the real reflection of the speaker's linguistic competence E.g:1.庞大宏大硕大伟大-领袖毛主席1.Some Basic Concepts（基本概念） • Errors （错误） 1. grammatically incorrect 2. grammatical misuse 3. systematic and regular deviations from correct form of language. E.g. : He like reading. / She smiling. • Mistakes（失误） 1. grammatically correct but improper in the communicative context. 2. Pragmatic misuse 3. not systematic, not the real reflection of the speaker’s linguistic competence E.g.:1.庞大/宏大/硕大/伟大----领袖毛主席