请问“There are three people to come in.”语法对吗？“to”还要不？

不对

come in 后面应该有表示场所的词语
要么就不要加in

另外 come表示的是时间极短的将来
一般不用to come 而用coming

应该是
There are three people coming into
固定用法there be someone doing

错误
应该是
There are three people coming in
there be something(somebody) doing是个句型

语法错误