23. I have just bought a dictionary.
→ A dictionary have been just bought
S + have/has + been + VpII + by O
24. Students can do the test easily.
→ The test can be done easily by Students
S + can be + VpII + by O
25. Mr. John hasn’t taught that course since 1985.
→ That course hasn’t been taught since 1985 by Mr.John
S + have/has +(not) + been + VpII + by O
26. People believe that the thieves got in through the kitchen window.
=> It is belived that the thieves got in through the kitchen window.
=> The thieves are believed to have gotten in through the kitchen window.
27. It is said that she works 16 hours a day.
→ She is said to work 16 hours a day
→ People say that she works 16 hours a day.
Câu 26 + 27 :
Active : S1 + say/think/believe + that + S2 + V2
Passive : C1 : It + tobe + said/thought/believed + that + S2 + V2
C2 : S2 + (tobe) + thought/said/believed + to V (nếu V2 cùng thì với say/think/believe hoặc đây là thì tương lai đơn)