Mistake is a result of L1 interference and the stage of the learner development. It affects to accuracy.
Errors are comitted when learners do not know the structures of the language or an individual item about the language.
Slips happens when students make mistakes however, they realize and correct themselves.
Categories | Examples | Descriptions |
Inaccuracy: pronunciation | There was a terrible /flu:d/ | Incorrect pronunciation of flood /fləd/ |
Inaccuracy: grammatical | News are reported 24 hours a day | Wrong/incorrect subject-verb agreement |
Inappropriate style/register | Give me a cup of coffee | Inappropriate register |
Inaccuracy: lexical | My grandfather is a senior man | Incorrect adjective |
Inaccuracy: spelling | The leafs were a beatiful colour. | Incorrect spelling (leaves) |
Innacuracy: punctuation | Where doesa he live | Inaccurate use of full stop |
Reference:
Spratt, M., Pulverness, A., & Williams, M. (2012). The TKT Course Modules 1,2 and 3 (2nd ed.). New York: Cambridge University Press.
Mistakes can be oral or written.