Use "___ needs to be ___" to talk about work that someone needs to do:
It needs to be done soon.
English speakers use "be __" to avoid saying exactly who should do something. For example, you might say this this to an employee:
The files in this folder all need to be reviewed.
Instead of this:
You need to review the files in this folder.
The first one sounds softer and less direct.
Or you can say "___ needs to be ___" if you don't know who should be responsible:
That old building needs to be knocked down.
Use "___ doesn't need to be ___" when it's OK not to do something:
No, they don't need to be cooked. You can eat them just like that.