标题 | have done doing是什么时态 |
范文 | 构成形式 非第三人称单数:Subject (主语)have been + 动词的现在分词 第三人称单数:Subject (主语)has been + 动词的现在分词 基本句型 肯定句 主语+have/has+been+动词的现在分词+其他 否定句 主语+haven’t/hasn‘t+been+动词的现在分词+其他 一般疑问句 have/has+主语+been+动词的.现在分词+其他 肯定回答:Yes.主语+have/has 否定回答:No.主语+haven't/hasn't 1) 表示一个在过去开始而在最近刚刚结束的行动,如: Ann is very tired. She has been working hard. Why are your clothes so dirty? What have you been doing? 2) 表示一个从过去开始但仍在进行的行动,如: It has been raining for two hours. (现在还在下) Jack has been feeling very well recently. 3) 表示一个从过去开始延续到现在,可以包括现在在内的一个阶段内,重复发生的行动,如: She has been playing tennis since she was eight. 4) 现在完成时强调动作行为的结果、影响,而现在完成进行时只强调动作行为本身,如: Tom’s hands are very dirty. He has been repairing the car. The car is going again now. Tom has repaired it. 标志:1.句中常有延续性动词,2.时间点前有since。 上一篇:be原型的用法总结 下一篇:写出convenient的名词形式 |
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