- Hiện tại đơn
(+) The flowers are watered by my father everyday
(-) The flowers aren't watered by my father everyday
(?) Are the flowers watered by my father everyday?
By whom are the flowers watered?
- Hiện tại tiếp diễn
(+) The project is being done by the students
(-) The project isn't being done by the students
(?) Is the project being done by the students?
What is being done by the students?
- Hiện tại hoàn thành
(+) The floor has been cleaned by Jim
(-) The floor hasn't been cleaned by Jim
(?) Has the floor been cleaned yet?
By whom has the floor been cleaned?
- Quá khứ đơn
(+) The book was read by Marry yesterday
(-) The book wasn't read by Marry yesterday
(?) Was the book read by Marry yesterday?
When was the book read by Marry?
- Quá khứ tiếp diễn
(+) A cake was being made at 4 pm yesterday
(-) A cake wasn't being mad at 4 pm yesterday
(?) Was a cake being made at 4 pm yesterday?
When was a cake being made yesterday?
- Quá khứ hoàn thành
(+) The book had been taken before we arrived
(-) The book hadn't been taken before we arrived
(?) Had the book been taken before you arrived?
Who had the book been taken before you arrived?
- Tương lai đơn
(+) A new building will be built in this area
(-) A new building won't be built in this area
(?) Will a new building be built in this area?
Where will a new building be built?
- Modal verb
(+) This work can be done
(-) This work can't be done
(?) Can this work be done?
When can this work be done?
