高考英语语法-动词的-ed形式的用法！今天开始学习动词的-ed形式的用法专题，动词的-ed形式在句中主要起形容词和副词的作用，可以作定语、表语、状语和补语。伊顿教育自主招生辅导老师为大家整理了下面的语法详情，大家关注！

　　D：动词的-ed其他表示用法

　　动词的-ed形式作状语和-ing形式作状语一样，也可以表示时间、原因、条件、让步、 方式或伴随情况等。

　　1.表示时间

　　动词的-ed形式作状语表示时间，相当于一个时间状语从句。

　　Seen from the tower, the city looks beautiful. 从塔上往下看，城市显得很美丽。(= When the city is seen from the tower...)

　　Shown the lab, we were taken to see the library. 带我们参观了实验室之后，又带我们参观了图书馆。(= After we had been shown the lab...)

　　Completely examined by the doctors, he went back to school right away. 经过医生彻底检查以后，他立刻回到了学校。(= After he was completely examined...)

　　提示：

　　有时动词的-ed形式前可加连词when或while来强调时间概念。

　　When asked why she was late for class again, she hung her head in shame. 当被问到为什么上课又迟到时，她羞愧地低下了头。

　　Once recovered, he went all out to do his work. 一恢复健康，他就全力以赴地干起了工作。

　　Once started, the clock will go half a month and keep good time.一旦给这钟上了发条，它就会走半个月，并且走得很准。

　　2. 表示原因

　　动词的-ed形式作状语表示原因，相当于一个原因状语从句。

　　Moved by the heroic deeds, the children couldn't help crying. 孩子们被英雄事迹感动，情不自禁地哭了起来。(= Since they were moved by the heroic deeds ...)

　　Written in haste, her letter is very hard to read. 因为写得快，她的信很难阅读。(=As it was written in haste ...)

　　Excited by the new discovery, we decided to go out and celebrate. 我们因为新发现而激动万分，决定出去庆祝一下。(Because we were excited by...)

　　注意：

　　为了使-ed形式表示的条件、动词让步意义更加明显，我们可以加上适当的连词。

　　Even if invited,I won'tgo. 即使受到邀请，我也不去。

　　Though beaten by the opposite team,they did not lose heart. 虽然被对手打败，便他们并没有丧失信心。

　　Unless invited,he will not come back to the company. 除非被邀请，不然他不会回到公司来的。