I think most everyone believes they know a verb's past and present tense but sometimes it is in question. This web site conjugates verbs in numerous languages and also does translation of them. Besides the web site they have a free program you can install on your computer. The web site version seems to conjugate verbs in British usage while the installed version lets you pick Brit or USA English. So if verb tense interests you or is a problem sometimes, check this out----
http://www.verbix.com/languages/english.html
Sensual Hobgoblin
