I don't think you'd want to know my 'english exam technique' unless you wanted to dismally fail.. like me.

BUT, here is my step-by-step process of planning in
normal conditions.
(1) Underline the key words in the topic, and find at least 4 or 5 synonyms for each of these.
(2) Ask questions of the question... write down a list of about 3 or 4 questions, and answer them by using conceptual and thematic ideas.
(3) Step back and have a look at your answers in part (2).. develop 3 key ideas (for your body paragraphs) and make sure you have a point-of-difference; a 'however' paragraph.. in order to create your perceptive response.
(4) Now, you should create your contention. Again, there should be a 'however' in this contention... and your 3 key ideas from part (3) should all act as supportive arguments for this point-of-view.
(5) Write out your topic sentences for each body paragraph - really quickly - and if possible, allocate quotes and evidence now.
I'd also like to add that, in your text response essays, make sure you keep on referring back to the writer/author. For example, in a Look Both Ways essay, I would always use phrases like "Watt demonstrates that..." and "Hence, Watt clearly explicates that..." to substantiate my arguments. By always referring to the creator of the text, you are showing your examiner that you have written a distinctive, perceptive interpretation of the topic... and this is what is required!
Good luck brightsky..... genius!
