Reverse charge and partial reverse charge

Dear All,

I have few queries on S.tax:

1.S.provider includes s.tax amt amt in invoice and gets the entire amt from the receiver and pays s.tax amt to the govt in normal case... Is my understanding right?

2.In case of reverse charge, does s.provider raise the invoice along with the s.tax amt or he simply raises the invoicce for the service rendered alone???

3.In case of partial reverse charge, how does the s.provider raise the invoice?