初中英语八种时态及其结构

　　

　　英语中八种基本时态有：一般现在时、一般过去时、现在进行时、过去进行时、现在完成时、过去完成时、—般将来时、过去将来时。

　　一、一般现在时

　　基本结构：1）动词+原形 （如主语为第三人称单数，谓语动词上要加s,es,或变y为i,再加es）

　　2）如果含有be动词：主语+is/am/are+形容词/名词/介词短语等（主语为第三人称单数用is,主语为I用am,主语为复数用are）

　　例句：Our teachers always arrive early.

　　I am an English teacher.

　　二、一般过去时

　　基本结构：1）主语+动词过去式

　　2）如果含有be动词：主语+was/were+形容词/名词/介词短语等（主语为单数用was,主语为复数用are）

　　例句：She sang a song in class yesterday.

　　They were here just now.

　　三、现在进行时

　　基本结构：am/is/are+doing（主语为I用am,主语为第三人称单数用is,主语为复数用are）

　　例句：It's getting colder and colder.

　　They are doing well in their lessons.

　　

　　四、过去进行时

　　基本结构：was/were + doing

　　例句：She was working at nine o'clock yesterday?

　　When I arrived, they were reading a story.

　　五、现在完成时

　　基本结构：has/have + done(过去分词）（主语为单数用has,主语为复数用have）

　　例句：It has rained recently.

　　They have lived here for more than twenty years.

　　

　　六、过去完成时

　　基本结构：had + done（过去分词）

　　例句：By the end of last week，they had reviewed four books.

　　He had bought the car before 2003.

　　七、一般将来时

　　基本结构：1)is/am/are + going to + do（主语为第三人称单数用is,主语为I用am,主语为复数用are）

　　2) shall/will + do（主语为第一人称可用shall/will,其他人称用will）

　　例句：We are going to visit the factory tomorrow.

　　I think she will be back next week.

　　八、过去将来时

　　基本结构：1）was/were + going to + do（主语为单数用was,主语为复数用were）

　　2）would + do

　　例句：　　They told me they would go to Beijing.

　　The doctor asked who was going there.

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