In order to analyse, interpret and evaluate a text you need to be familiar with the language features and conventions of a range of contrasting texts from a range of genres. You need to be familiar with the structure and function of words, their ordering in sentences; word and sentence choices and the effect of these choices on ideas, meaning and style.
When faced with an unfamiliar text, you need to understand the language, meanings and ideas and the literary qualities and effects of the text, and be able to respond to all of these, considering purpose and audience.
As you read the texts in the exam, underline words and phrases which seem to be significant in terms of language, ideas and meanings, or style (literary qualities and effects) or purpose and audience. Annotate the text, jotting ideas over the extract.