Myson#39;shairistoolong:itwants____.I#39;llhaveit____tomorrow.a.cutting,doneb.cutting,tobedonec.beingcut,doned.tobecut,tobedone为什么要选a呢?头发不是被剪吗?

问题：Myson#39;shairistoolong:itwants____.I#39;llhaveit____tomorrow.a.cutting,doneb.cutting,tobedonec.beingcut,doned.tobecut,tobedone为什么要选a呢?头发不是被剪吗?

答案：↓↓↓

孙戈里的回答：

网友采纳　　人作主语时：wanttodosth.想要做...wantsb.todosth.希望(人)做...wantsth.done希望（物）被...物作主语时：sth.wantdoing,这时候的want,意思是“必须,应该”,相当于need.这里的doing有被动的意...