sure的用法 肯定的：certain的用法大全

肯定的：certain的用法大全  

 You see, I…I am crazy. I take the newer medications, but I still see things that are not here. I just choose not to acknowledge them. Like a diet of the mind, I choose not to indulge certain appetites. Like my appetite for patterns. Perhaps my appetite to imagine and to dream.,——A Beautiful Mind ,你要明白，我……我是疯的。我服用最新的药物，但我仍然看的见那些不存在的东西。我只是选择了不去理睬他们。就好像一顿心灵快餐，我选择不去纵容某些食欲。比如说我症状的食欲。还有我虚构和想象的食欲。,——《美丽心灵》,一、你知道certain有几种含义吗？,adj.,1.确实的，有把握的，毫无疑问的 firmly believing sth; having no doubts,I am certain that by the end of the century we can surpass the goal of quadrupling the GNP.,我相信到本世纪末我们的国民生产总值肯定会超过翻两番的目标。,2.必然的，必定的，肯定的，确定的，无疑的 that you can rely on to happen or to be true,He had been there four times to my certain knowledge.,我确定他去过那儿4次。,3.某一 used to mention a particular thing, person or group without giving any more details about it or them,It is impossibly for heat to be converted into a certain kind of energy without something lost.,一点不损耗就把热转换成某种能是不可能的。,pron.,某些，某几个used for talking about some members of a group of people or things without giving their names,二、下面我们来学习一下含有certain的常见短语,for certain,1.肯定地,三、接下来，做个小测试吧,The show appeals to an audience of a ______ age.
某个年龄层的观众对这个节目感兴趣。