1.最高级标志词形容词、副词最高级 most / chief / primary / main / leading / ……

　　2.唯一级标志词 only / unique / prefer / every / one / of all / perfect / ……

　　3.因果项标志词 cause / lead to / contribute to / thanks to / owing to / question / answer / why / reason / 其他形式的问句 / ……

　　4.转则项关键词 despite / in spite of / instead / while / from ~ to ~ / although ~ （yet）~ / not only ~ but also ~ / ……

　　5.序数项标志词所有的序数词（first , second）/ another / the other / next / last / in addition / on the other

　　6.时间项标志词 when / how / today / as / before / after / since / then / until / ……

　　7.解释项标志词 or / namely / in other words / that is / that is to say / ……

　　8.目的项标志词 to / for / ……

　　9.总结项标志词 all in all / in brief / to conclude / at last / in summary / in short / ……

　　10.强调项标志词 副词：especially / particularly / almost / always / usually / …… 动词：show / remember / note / notice / say / pronounce / ……