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...
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(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/...
