列出16种时态的构成比如 have done 现在完成时
2个回答

一般现在时:用动词原形

一般过去时:用动词的过去式

一般将来时:will/shall+do

is/am/are going to do

过去将来时:could/would do

现在完成时:have/has done

过去完成时:had done

将来完成时:shall have done

过去将来完成时:would/could have done

现在进行时:is/am/are doing

过去进行时:was/were doing

将来进行时:will/shall be doing

过去将来进行时:would/could be doing

现在完成进行时:have/has been doing

过去完成进行时:had been doing

将来完成进行时:shall have been doing

过去将来完成进行时:would have been doing