現在完成時的被動語態：

　　承受者+have（復數主語）/has been done by+執行者（不明確可省略）

　　E.g. 主動：Our School has finished many scientific researches.

　　被動：Many scientific researches have been finished by our school.

　　將來時態的被動語態：

　　承受者+（be going to/will/shall/be to）have been done by+執行者

　　E.g. 主動：We'll have finished the book by the end of September.

　　被動：The book will/shall have been finished by the end of September.

　　Note：by the end of 短語的用法

　�。�1）Will have done by the end of +將來時態

　�。�2）Had done by the end of +過去完成時態

　　E.g. The project had been made by the end of last week.