Bob worked hard enough to pass the exam.为什么work要加ed?是否可以不加?请指导,

Bob worked hard enough to pass the exam.为什么work要加ed?是否可以不加?请指导, I worked hard They worked hard yesterday afternoon.用worked hard 提问 They worked hard at___(sing). They worked ___________(hard).急 She worked hard so that she the girl worked very hard 改为感叹句 Thank you,you have worked hard! he was worked hard.was要加吗? They worked very hard this morning. they worked very hard this morning maybe i worked very very hard. they worked very hard this morning ( )he was ill,he worked hard maybe i worked very very hard. i worked so hard to find you . 英语翻译2 翻译Hard as he worked i remember that you work hard 还是worked hard,为什么?