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