1、首先我们先来看一个题目：There _____ a boy and two girls in the classroom.问题：在这个题目中，应该填入is还是are?
2、首先我们来先了骈禄笫杳解一下there be句式的定义。该句式的意思是有……，可以接人活着物在这种句式中there只是引导词，没有那里的意思。例剧安颌儿如：There is pretty girl in the classroom.在这种句子中，there be后面的才是主语
3、该怎么使用there be结构？N1 be 前面可以加上情态动词例如：There may be some troubles in this thing.
4、N2 疑问句直接将be提到前面例句：Is there a buautiful girl in this classroom?
5、N3 否定式直接在be后面加no/not例句：、There i衡痕贤伎s no money for you to spend.There is 荏鱿胫协not the girl who you want to find.
6、N4 句子后面通常加上时间/地点状语例句：There may be ghost in this world.There will be a meeting in this room tomorrow.
