I’mveryhappy.BecauseIgotapairofnewshoes.Doyouknowwhy?I’mtired.Whyareyoutired?BecauseIstayeduplatelastnight.tiretired.Heissad.Whyishesad?Becausehegotapoorgrade.sadexcitedBecausetheygotakitten.Whyaretheyexcited?They’reexcited.exciteHe’sscared.Why?Becauseheheardanoise.scarescared动词的过去式动词的过去式stay---staystay---stayeded停留停留hear---hearhear---heardd听到听到get---gget---goott得...