tionin
addition，and，similarly，likewise，as well as，besides，furthermore，also，moreover，and then，too，not only ... but，even，besides this/that
ence
first，initially，second etc.，to begin with，then，next，arlier/later，after this/thatfollowing this/that，afterwardsc
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 spite of，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，namel to illustrate