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 ~ ~ / not only ~ but also ~ / ......
5.序数项标志词所有的序数词/ another / the other / next / last / in addition / on the other hand / ......
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 / ......