现在完成时语态是英语中常用的时态,表示过去发生的事情与现在的联系。其基本结构为“have/has + 过去分词”。肯定句的结构为“主语 + have/has + 过去分词”,否定句为“主语 + haven't/hasn't + 过去分词”,疑问句为“have/has + 主语 + 过去分词”。回答疑问句通常为“Yes, 主语 + have/has + 过去分词”或“No, 主语 + haven't/hasn't + 过去分词”。have/has的用法取决于主语的人称和数,过去分词的构成有规律和不规律两种。
肯定句
现在完成时语态的肯定句结构是“主语 + have/has + 过去分词”。例如:
- I have finished my homework.
- She has studied English for five years.
否定句
现在完成时语态的否定句结构是“主语 + haven't/hasn't + 过去分词”。例如:
- I haven't finished my homework.
- She hasn't studied English for five years.
疑问句
现在完成时语态的疑问句结构是“have/has + 主语 + 过去分词”。例如:
- Have you finished your homework?
- Has she studied English for five years?
疑问句的回答
现在完成时语态的疑问句回答通常是“Yes, 主语 + have/has + 过去分词”或“No, 主语 + haven't/hasn't + 过去分词”。例如:
- Have you finished your homework?
- Yes, I have.
- No, I haven't.
注意事项
- have/has的用法取决于主语的人称和数,其中have用于I/you/we/they,has用于he/she/it。
- 过去分词的构成有规律和不规律两种,需要根据不同的情况进行记忆和学习。