由“助动词be + 动词的过去分词”构成。助动词be 有时态、人称和数的变化。

(1) 一般现在时：am/is/are +过去分词。如：

Rice is grown in south China. 华南种植水稻。

(2) 一般过去时：was/were+过去分词。如：

The glass was broken yesterday. 这块玻璃是昨天打烂的。

(3) 现在进行时：am/is/are being +过去分词。如：

The project is being carried out. 这个计划正在执行中。

(4) 过去进行时：was/were being +过去分词。如：

This road was being built this time last year. 这条路去年这个时候还在修建。

(5) 一般将来时：will be +过去分词。如：

The cars will be sent abroad by sea. 这些汽车将由水路运往国外。

(6) 过去将来时：would be +过去分词。如：

The manager said the project would be completed by the end of the year. 经理说这个工程在年底前将会完成。

(7) 现在完成时：have/has been +过去分词。如：

This novel has been translated into several languages. 这本小说已被译成了几种语言。

(8) 过去完在时：had been +过去分词。如：

When I got to the theatre, I found the tickets had already been sold out. 我到达剧院时，发现票已卖完了。

语态是动词的一种形式，用来表明主语与谓语动词之间的关系，英语动词有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者，同一件事情往往可以通...[阅读全文]

先看看这个句子： I dont know him，but he __________ to have a lot of money. A. says B. said C. is said D. is saying 此题应选 C。这是一类比较特殊的被动语态。试比较以下各组句子： 据...[阅读全文]