This document provides useful vocabulary and phrases for IELTS writing tasks. It begins by listing words to state opinions such as "in my opinion" and "I think". It then gives examples of words for comparing and contrasting opinions as well as generalizing and expressing certainty. The document also provides tips for writing effective IELTS letters, such as identifying the letter type and including an appropriate opening and closing. Finally, it lists helpful vocabulary for describing trends in IELTS Writing Task 1, including verbs, nouns, phrases, adverbs and adjectives.