1.What is required in the repulation 这是主语从句,其谓语是 is .that you shouldn't tell others the password.是表语从句.
2 what I said.是谓语agree 的 宾语从句.where you are是谓语stand 的地点状语从句.
3.There being no buses这是独立主格.
4.after which he went on to the university.这是非限定性定语从句.which 指代He was educated at the local school整个这句话.