it is，that is，there is的区别是什么，请举类说明

it is，that is，there is的区别是什么，请举类说明

it is :表示这是……，它是……，如it is my book这是我的书，it is my petdog这（它）是我罩橡的宠物狗。也表示陈述消橘句回答“是的”如 Is it(that) your mobile phone?那是你的手机吗---Yes,it is .是拿闷团的that is :表示那是，通常指较远的东西，或者别人手上的东西.如：That is love那就是爱。 Are you going to get rid of them ?你打算杀了他们吗？---That's right.你说对了。there is：那里有……/这里有……如：There is a pair of shoes under the desk.桌底下有一双鞋子。