1) but, but on the contrary, but on the other hand, but then; 2) by contrast, in contrast, in contrast with/to, as a contrast to, as opposed to; 3)by contraries, on the contrary, to the contrary, contrary to (A), opposite to, in opposition to; 4) whereas, while, while on the other hand, while on the whole, yet, however; 5) (as) compared with/to, by comparison, in comparison with, by comparison to. 6) First..., Next..., Last...; 7) In the first/early/initial/infant period/stage/phase(或In its infancy) ..., In the second/middle/adult/ripe period/stage/phase..., In the third/last/closing/later/concluding period...; 8) One step (way/course/approach/secret/trick)..., Another step..., Still another step...; 9) The first measure/step/move..., Next to it comes..., And the last/final/the most important measure...; 10) The direct experience/lesson/factor/way(或One lesson)...The indirect experience/lesson/factor/way(或The other lesson)...
