Here are a few links for searching corpora online, inlcuding well known monolingual corpora like Brown, LOB, and BNC sampler and also some parallel English-Chinese corpora.
English: http://www.edict.com.hk/concordance/WWWConcappE.htm
English: http://www.lextutor.ca/concordancers/concord_e.html
Parallel: http://www.edict.com.hk/concordance/paralleltexts/
English: http://www.edict.com.hk/concordance/WWWConcappE.htm
English: http://www.lextutor.ca/concordancers/concord_e.html
Parallel: http://www.edict.com.hk/concordance/paralleltexts/