Answer:
Transitional words and phrases can be used to:
Add ideas: again; furthermore; besides; too; also
Compare or contrast: likewise; yet; however; although
Prove: because; since; obviously
Show exceptions: yet; however; occasionally
Show time: soon; finally; next; then; later
Show effect: consequently; thus; therefore
Emphasize: obviously; certainly; indeed
To give examples: for example; to demonstrate; to illustrate
To conclude: thus; consequently; therefore