三.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
四.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
