1.Additionin
　　addition，and，similarly，likewise，as well as，besides，furthermore，also，moreover，and then，too，not only ... but，even，besides this/that
　　2.Sequence
　　first(ly)，initially，second(ly) etc.，to begin with，then，next，arlier/later，after this/that following this/that，afterwards
　　3. Consequence
　　as a result，thus，so，therefore，constantly，it follows that，thereby，eventually，then，in that case，admittedly
　　4. Contrast
　　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
　　5. Certainty
　　obviously，certainly，plainly，of course，undoubtedly
　　6. Condition
　　if，unless，whether，provided that，for，so that，whether，depending on
　　7. Definition
　　is，refers to，means，that is，consists of
　　8. Summary
　　in conclusion，in summary，lastly，finally，to sum up，to conclude，to recapitulate，in short
　　9. Example
　　for instance，one example，for example，just as，in particular，such as，name to illustrate
　　10. Reason
　　since，as，so，because(of)，due to，owing to，the reason why，in other words，leads to