To be wars / wers was / were is / are. have has had his. become beconme became becomes. think tought thinked taught. teach tought touch taught. pay paid payed pedir. read reat red read. send sended sent sought. show showt show showed. fall fell full felt. learn learned / learnt lernead / lernt learnd / learnt. begin betun begin began. see was seed saw. understand understood understend understed. swim swum swam swan.