PYRRHIC : In classical Greek or Latin poetry, this foot consists of two unaccented syllables--the opposite of a spondee . At best, a pyrrhic foot is an unusual aberration in English verse, and most prosodists (including me!) do not accept it as a foot at all because it contains no accented syllable. Normally, the context or prevailing iambs, trochees, or spondees in surrounding lines overwhelms any potential pyrrhic foot, and a speaker reading the foot aloud will tend artificially to stress either the first or last syllable. See meter for more information.
Absolutely not if you want band 9. You must use natural language, not phrases and sentences you have learned from an academic writing website or book. Never learn sentences to put in your essay. Each essay is written uniquely depending on the topic. Any learned sentences are not counted by IELTS. I strongly suggest you get at least one of my advanced lessons in writing task 2 so you understand not only the techniques but what IELTS is all about in terms of how it functions as a language test: http:///IELTSLizStore