1、某些系动词，如 feel,look,seem,appear,taste,sound,smell,prove,remain 等用主动形式表示被动意义;主语通常是事物，且表示该事物本身具有某一固有特征。如：The material feels very soft.这种料子摸起来很柔软。误：The material lis felt very soft.The music sound sbeautiful.这音乐听起来很美妙。误：Themusic is sounded beautiful.表示主语由内在品质或性能，使得主语得以实现或不能实现，用主动表示被动，常见的这类动词有：write,read,c
2、lean,sell,wash,cook,open,close,lock 等。1.同 well,badly,easily等副词连用。如：The cloth wash eseasily.这布很好洗。The book sells well.那本书很畅销。The pen writes smoothly.这支笔很好写。2.谓语动词用否定式。如：The window wontopen.这扇窗开不了。The door wont lock.这门锁不上。3.主语+ 谓语(blow,wear 等)+ 主补。如：The door blew open.门被风吹开了。某些日常用语，cook,bake,make,prin
3、t,pack,build,workout 等动词用于进行时态时，可用主动形式表示被动意义。如：The fish is cooking.鱼正在煮。The book is printing.那本书正在印刷中。The plan is working out.计划正在制订。不定式在下列情况下用主动形式表示被动意义：1.在 “be+形容词 +fittodo”句型中。如：English words are difficult to remember.英语单词很难记。注：常用于此句型形容词有 easy,hard,difficult,heavy,light,comfortable 等。2.在作补语的形容词后作
4、状语的不定式。如：We found the book easy to understand.我们觉得这本书的容易懂。3.在 This/That/These/Those be 后的名词后的不定式。如：This is a difficult problem to solve.这是一个很难解决的问题。4.在 “there be/have/with sth.to do(有要)”结构中。如：I have a lot of work to do.我有许多事要做。5.在 “疑问代词 +不定式” 结构。如：The question is what to do next.问题是接下来做什么。6.在 “be to blame/seek/let”结构中。如：The house is to let.此房出租。He is to blame for this.他因此事应受到责备。在表示“需要”的 need,want,require，及 be worth 后的动词-ing 形式，用主动形式表示被动含义。如：The floor needs sweeping.这地需要打扫了。That picture is worth looking at.那幅画值得看。
