Pasif

Tobe + V3

1.       A. V1

P. Is , am , are + V3

A. She writes a letter

P. A letter is written by her

2.       A. V2

P. Was , were + V3

A. She wrote a letter

P. A letter was written by her

3.       A. Has/have + V3

P. Has , have + been + V3

A. She has written a letter

P. A letter has been written by her

4.       A. Am , is , are + V. Ing

P. Am , is , are + being + V3

A. She is writting letter

P. A letter is being written by her

5.       A. Will/can , should

P. Will / Can + Be + V3

A. I will write a letter

P. A letter will be written by her