Good theory and some exercises about connectors: to express contrast and some others. Also, some theory about the use of such / so.
Connectors: expressing contrast (Espresso English)
Connectors and Useful expressions
Connectors & Conjunctions
Such a nice vs Girl so good
Also, some ONLINE exercises:
=> fill in the gaps with: despite, in spite of, although, even though, though
=> fill in the gaps with: although, though, despite and however
http://mbonillo.xavierre.com/exercises/bch2/2bch2008/contrph2bch5.htm
=> rephrasing using connectors of contrast (although, despite, ...).
