there be 句型：there is sb doing sth，doing sth。这里是填i

Question

there be 句型：there is sb doing sth，doing sth。这里是填is对吗？要是说有两个人或者两个人以上的话就是there are sb doing sth，doing sth，with sb doing sth，doing sth吗？可是后面是with呀，添are还是is'另外'标点对不对呀？求指导'''

Answer 1

后面是with不影响be动词的判断，是单数名词就是is，复数名词用are追问

我后面是两个sb'是填are吗？

Answer 2

there is sb doing sth，
there is sb doing sth with sb

Answer 3

there is sb doing sth，doing sth。

Answer 4

there are many fish.