Use sentence grammar accurately to achieve purpose
(i) Use different linguistic features appropriately for a range of different written genres, to suit learners' needs and interests
(ii) Check for accuracy, e.g. the way countable and uncountable nouns agree with the verb; use of articles and zero article
(iii) Know the form of, and understand, the concept expressed by a variety of tenses, with continuous and perfective aspects, and apply this knowledge and understanding when composing sentences
(iv) Understand that it is easy to change tenses unintentionally while writing, that this can affect meaning, so it is important to check for consistency
(v) Make connections between sentences and parts of sentences clear.