Linguistic analysis can be used to describe texts students could produce: teachers and students should have acces to successful texts to determine how texts are linguistically shaped and structured and how grammar and lexis is drawn upon: the genre. In genre beginning and stages can be identified on basis of shifts in lexical and grammatical patterning. As student move through school the type of texts they should produce becomes increasingly generalized and abstract, more interpretation and evaluation. This is done through nominalization, movein from chronological sequencing to embedding events as part of an argument and in using more evaluative lexis.