this was done是什么時(shí)態(tài)

　　雙語例句

　　1、The work was done with the minimum amount of effort.

　　做這項(xiàng)工作沒費(fèi)什么勁。

　　2、The work was done according to her instructions.

　　這項(xiàng)工作是依照她的指示辦的`。

　　3、It was done without the principal's authority.

　　做這件事未經(jīng)校長(zhǎng)批準(zhǔn)。

　　4、None of the work was done.

　　那些工作全都未干。

　　5、What beats me is how it was done so quickly.

　　使我困惑不解的是，這事怎么這么快就完成了。