Strong (or irregular) verbs

In the Germanic languages, strong verbs refer to those which are mainly characterized by the apophony phenomenon, i.e. the internal vowel or stem modification commonly indicating the differences between present (or infinitive), past and past participle forms.

English:   speak       spoke         spoken                 begin         began          begun               eat    ate     eaten
Dutch:     spreken    sprak(en)   gesproken           beginnen   begon (nen) begonnen         eten  at(en) gegeten
German:  sprechen  sprach(en) gesprochen         beginnen   begann(en)  begonnen         essen aβ     gegessen

The majority of the remaining verbs form the past tense by means of a dental suffix (- ed pronounced /t/, /d/, /id/ in English) and they are known as weak verbs 


If you want now to have fun with the strong verbs or have a good review, here are a game and various online activities.
Enjoy them!


http://games.wordreference.com/language-games/verb-dash



http://www.englisch-hilfen.de/en/exercises_list/verbs.htm


http://www.englishexercises.org/exercise.asp?id=1642


http://www.englishpage.com/irregularverbs/interactiveirregularverbs1.htm



If you want to know more about irregular verbs, I would recommend you to watch the following video by Espresso English:

 

 

 

 

 

http://www.espressoenglish.net/tips-for-learning-irregular-verbs-in-english/