指示代词既可以单独使用做句子的主语、宾语或表语,也可以作定语修饰名词。如：
What’s this?(这是什么？) / That model plane is made of plastic.(那只模型飞机是塑料做的)(被动句) / Remember never to do such things.(记得永远不要做这样的事情) / Do the same as the teacher tells you. (按老师说的做)/ ---Who is it?(是谁？) ---It’s me!(是我！)
