there be 小结
1.基本结构
There be +主语 + 地点 /时间状语。如：
There is a computer in the room.房间里有一台电脑。
There are two TV plays every evening.每晚有两场电视剧。
2.主谓一致
要采取就近一致原则，和*近be的主语一致。如：
There is a pen, two rulers in the box.盒子里有一只钢笔，两把尺子。
There are two boys and a teacher at the school gate.门口有两个男孩，一个老师。
3.主语后的动词形式
在there be 句型中，主语与动词是主动关系时用现在分词；是被动关系时用过去分词。如：There is a purse lying on the ground.地上有一个钱包。
There are five minutes left now.现在还有5分钟。
4.反意疑问句。
反意疑问句应与there be对应，而不是依据主语。如：
There is a radio on the table, isn't there? 桌子上有一台收音机，是吧？
There are more than fifty claes in your school, aren't there? 你们班有50多名学生，是吧？
5.there be 与have的替换
there be表示所属时可与have替换。
There is nothing but a book in my bag.=I have nothing but a book in my bag.包里只有一本书。
6.there be后接不定式时常用主动形式表示被动意义。如：
There is a lot of work to do.有许多工作要做。
注意：当该句型主语是something, anything, nothing等不定代词时，后面的不定式用主动形式或被动形式，意义各不同。
There is nothing to do.没有事可做。
There is nothing to be done.没有办法(束手无策)。
7.与其它词连用，构成复合谓语。如：
There may be a rain this afternoon.今天下午可能有雨。
There used to be a cinema here before the war.战争之前，这儿有一家电影院。
8.变体
there be结构中的be有时可用live, stand, remain等代替。如：
Once there lived a king who cared more about new clothes than anything else.从前有位国王喜欢新服胜过别的任何东西。
9.习惯用语
There is no good /use (in) doing sth.做某事没有好处/用处；There is not a moment to lose.一刻也不能耽误。例如：
There is no good making friends with him.和他交朋友没有什么好处。
He is very ill.Send him to hospital.There's not a moment to lose.他病得厉害，把他送到医院去，一刻也不能耽误。
