CALPERLEX is a space in the Corpus Portal that is dedicated to the exploration of language through corpus analysis. Teachers can find single lexical items or contrasting lexical pairs or routine expressions presented in form of concordance lines. The "problem sets" can be printed out and used as worksheets in the classroom. They can also be used by individual learners for self-study.
| Language | Lexical Item (s) | Mode | Submitted by |
| Chinese | yizhi / shizhong | written | Haiyang Ai, Xiaofei Lu, Hongyin Tao, 2009 |
| Chinese | zaocheng / xingcheng | written | Haiyang Ai, Xiaofei Lu, Hongyin Tao, 2009 |
| Language | Lexical Item (s) | Mode | Submitted by |
| Spanish | en seguida | spoken | Carolina Amador, 2009 |
| Spanish | por fin / en fin | spoken | Carolina Amador, 2009 |
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