开心的英语是happy;joyful;rejoice;delight。常用短语:1.tobehappyforsb为某人感到高兴2.tokeepsbhappy让某人感到高兴;令某人开心;使某人满意3.tobehappywithsth对...感到满意4.toputonahappyface强装笑颜例句:That'soneofmyhappiestmemories.那是我最快乐的回忆之一。Moneywon'tmakeyouhappy.金钱不会使人快乐。