掌握关联词有助于正确理解句子的逻辑关系和语义，雅思考试中常用的英语关联词分为十一大类：
关联词1.Additionin递进
addition，and，similarly，likewise，as well as，besides，furthermore，also，moreover，and then，too，not only …… but，even，besides this/that
关联词2.Sequence序列、顺序
first(ly)，initially，second(ly) etc.，to begin with，then，next，arlier/later，after this/that following this/that，afterwards
关联词3. Reason原因
since，as，so，because(of)，due to，owing to，the reason why，in other words，leads to
关联词4. Consequence结果
as a result，thus，so，therefore，constantly，it follows that，thereby，eventually，then，in that case，admittedly
关联词5. Contrast对比
however，on the other hand，despite，in spiteof，though，although，but，on the contraryotherwise，yet，instead of，rather，whereas，nonetheless，even though，compared with，in contrast，alternatively
关联词6. Summary总结
in conclusion，in summary，lastly，finally，to sum up，to conclude，to recapitulate，in short
关联词7. Example举例
for instance，one example，for example，just as，in particular，such as，name to illustrate
关联词8. Certainty肯定
obviously，certainly，plainly，of course，undoubtedly
关联词9. Condition条件
if，unless，whether，provided that，for，so that，whether，depending on
关联词10. Definition下定义
is，refers to，means，that is，consists of
关联词11. Time时间
before，since，as，until，meanwhile，at the moment，when，whenever，as soon as，just as