http://www.genpsylab.unizh.ch/chemn_exp/Perfect/index.html

People say: English has no grammar! I wonder why so many learners find the present perfect extremely difficult. I am interested in finding better ways to explain the present perfect. In this experiment the participant can a) test his knowledge of the present perfect, or b) learn a few interesting details about the present perfect.

Web Experiment

Chemnitz University of Technology, Germany

Katrin Voigt

February 21st 2004 - April 21st 2004