1. As compared to… 2. By comparing… 3. Compared with… 4. in comparison 5. in contrast 6. likewise 7. similarly 8. whereas 9. while
连词：
1. accordingly 2. additionally 3. also 4. besides 5. but 6. furthermore 7. however 8. in addition 9. moreover 10. nevertheless 11. on the contrary 12. so 13. therefore 14. thus 15. what’s more 16. yet 17. despite… 18. in spite of… 19. otherwise 20. instead of 21. alternatively
归纳用语：
1. above all 2. all in all 3. most importantly 4. worst of all 5. as a result 6. briefly 7. consequently 8. eventually 9. finally 10. generally 11. in conclusion 12. in general 13. in summary 14. to end with 15. to sum up 16. in brief
表示顺序用语：
1. first / second / third/ fourth… 2. first of all 3. firstly / secondly / thirdly/ fourthly…