把主动句变成被动句的方法和技巧，在英语中我们经常遇到一些转变语态的问题，让很多英语初学者都头疼不易，今天小编就为大家分享一下把主动句变成被动句的方法和技巧
主动句变被动句可按以下步骤进行。1、主动句变被动句的实质是将主语和宾语的位置对调，动词由原来的形式变为be加上动词的过去分词。如不需要突出动作的执行者，也可不要by-词组。They punished the criminal.-The criminal was punished.2．如果主动句带有情态助动词或半助动词，在变为被动句时，情态动词或半助动词保持不变，谓语动词由主动变为被动。They should do the work at once.-The work should be done at once.They must have finished their work.-Their work must have been finished.He is likely to let you down.-You are likely to be let down.3、如果主句是双宾语结构，变为被动句时刻有两种形式：一种是以间接宾语作主语；另一种是以直接宾语作主语。They offered him some assistance.-He was offered some assistance.4、如果主句的结构带有宾语补足语，变被动的时候要将原来的宾语补语变为主语补语。We have painted the windows white.-The windows have been painted white.They elected Tom monitor of the class.-Tom was elected monitor of the class.5、当主动句变为被动句时，有时用by-词组，有时不用。一般来说，当施动者为。
主动句变被动句的疑问 这是英语里的一种表达习惯，不定式是非谓语，语法上满足，那个不好说，谁知道谁是由谁变来的呢？
初三的主动句变被动句，被动句变主动句的方发（陈述句，一般问句，特殊问句）一定要全， 这很难教吧？举几个例子好了The chair is broken by me.(椅子被我弄坏了）I broke the chair.(我把椅子弄坏了）Is the chair broken by you？Did you broke the Chair？动词要用过去分词，参考过去分词列表，大部分都像过去式一样加-ed的.名词+be+过去分词+名词（可加可不加）.
