一系动词be的同法Be有am,is,are 我(I)用am 你(you)用are is连着他(he)她(she)它(it)我们(we)你们(you)他们(they)要用are 单数名词和不可数名词用is 复数形式要用are 变否定真容易be后not为标记变问句be提前，句尾问号要配全（？）应用时多注意缩写形式要牢记：Im=I am youre=you are hes=he is shes=she is its=it iswere=we are youre=you are theyre=they are . .二There be句型1.构成：There be .句型表示的是 “某处有(存在)某人或某物”，其结构为There be(is，are，was, were )+名词+地点状语。例如：There are fifty-two students in our class.There is a pencil in my pencil-case.There was an
