Learn and recite this table of irregular verbs.

Go - went                                               catch-caught

Fly - flew                                                  cut - cut

Be - was/were                                        find - found

Begin - began                                         leave - left

Write - wrote                                        mean-meant

Have - had                                              forget-forgot

These are verbs, which do not follow the normal principle of adding “ed”,_”ied”or -d'to their stems or roots in order to form their simple past.