现在完成时有多少种写法

现在完成时有以下写法：

1. 主语 + have/has + 过去分词 例如：

• I have eaten dinner.
• She has finished her homework.

2. 主语 + have/has + been + 现在分词 例如：

• They have been studying all day.
• He has been working on this project for weeks.

3. 主语 + have/has + 过去分词 + 宾语 例如：

• I have read the book.
• She has written the letter.

4. 主语 + have/has + been + 过去分词 例如：

• We have been invited to the party.
• He has been chosen for the team.

这些是现在完成时的常见写法，可以根据具体语境选择适当的句式。