1、一般现在时:主语+do/does
The little girl writes a letter to her mother every day.
这个小女孩每天给她的妈妈写一封信。(普遍情况下都是这样)
2、现在进行时:主语+am/is/are+v-ing
The little girl is writing a letter to her mother now.
这个小女孩正在给她的妈妈写信。(强调动作正在发生)
3、现在完成时:主语+have/has done
The little girl has written a letter to her mother.
这个小女孩已经给她妈妈写了一封信。(对结果有影响,说明写过了就不用再写了)
4、现在完成进行时:主语+have/has been doing
The little girl has been writing a letter to her mother.
这个小女孩一直在给她妈妈写信。(强调动作一直持续到现在,还有可能继续下去)
5、一般过去时:主语+did
The little girl wrote a letter to her mother.
这个小女孩给她妈妈写了一封信。(强调过去发生的事情)
6、过去进行时:主语+was/were+v-ing
The little girl was writing a letter to her mother yesterday evening.
这个小女孩昨天晚上正在给她妈妈写信。(过去正进行,强调过去事情的过程)
7、过去完成时:主语+had done
The little girl had written a letter to her mother.
这个小女孩那时已经给她妈妈写完了信。(具有影响的、强调过去的过去发生的事)
8、过去完成进行时:主语+had been doing
The little girl had been writing a letter to her mother.
这个小女孩过去一直给她妈妈写信。(强调过去之前的某个动作一直在持续)
9、过去将来时:主语+would do
The little girl would write a letter to her mother.
这个小女孩那个时候将会给她的妈妈写一封信。
10、过去将来进行时:主语+would be doing
The little girl would be writing a letter to her mother.
这个小女孩那个时候将会给她的妈妈一直写信。
11、过去将来完成时:主语+would have done
The little girl would have written a letter to her mother.
这个小女孩那时本会要给她的妈妈写信的。(实际上却没有写信)。
12、过去将来完成进行时:主语+would have been doing
The little girl would have been writing to her mother.
这个小女孩那时本会给她的妈妈一直写信(实际上却没有那样)。
13、一般将来时:主语+will do /主语+be going to
The little girl will write a letter to her mother.
这个小女孩将会给她的妈妈写信。
14、将来进行时:主语+will be doing
The little girl will be writing to her mother.
这个小女孩将会给她的妈妈一直写信。(将会发生,同时强调说话过程)
15、将来完成时:主语+will have done
The little girl will have written a letter to her mother.
这个小女孩将会给她的妈妈写完信的。(在未来一个时间,事情将已经完成)
16、将来完成进行时:主语+will have been doing
The little girl will have been writing a letter to her mother.
这个小女孩未来某时会已经给她的妈妈一直写信。(未来、已经、进行)