1、"there be" 后面的动词通常用于表示某事物存在或者某状态存在。
例如：
"There is a book on the table." (桌子上有一本书。)
"There are two cups of coffee on the counter." (柜台上有两杯咖啡。)
"There was a big storm last night." (昨晚有一场大风暴。)
"There were a lot of people at the concert." (音乐会上有很多人。)
2、"there be" 后面的动词在现在时中，动词 be 的形式是 "is/are/am"。
例如：
"There is a bright sun in the sky at noon." (中午天空里有着明亮的太阳。)
"There are many people having lunch in the park at noon." (中午时在公园里有许多人在吃午饭。)
3、"there be" 后面的动词在过去时中，动词 be 的形式是 "was/were"。
例如：
"There were quite a few clouds in the sky at noon yesterday." (昨天中午天空中有许多云。)