主要語法：被動語態

英語動詞有主動語態和被動語態兩種，當主語是動作的發出者，動詞用主動語態;當主語時動作的承受者，動詞要用被動語態。只有及物動詞才有被動語態。

1. 被動語態的構成：

被動語態由“be+過去分詞”構成。

如：I clean the window.(主動)

The window is cleaned by me.(被動)

根據時態的不同，被動語態中的be動詞可以有各種變化：

時態 主動句 被動句 be 的變化

一般現在時 He cleans the window. The window is cleaned by him. is

一般過去時 He cleaned the window. The window was cleaned by him. was

一般將來時 He will clean the window. The window will be cleaned by him. will be

現在進行時 He is cleaning the window. The window is being cleaned by him. is being

過去進行時 He was cleaning the window. The window was being cleaned by him. was being

現在完成時 He has cleaned the window. The window has been cleaned by him. has been

過去完成時 He had cleaned the window. The window had been cleaned by him. had been

將來完成時 He will have cleaned the window. The window will have been cleaned by him. will have been

進行時較少用被動語態。