Dạng bị động với mệnh lệnh yêu cầu (The Passive voice with commands):
a) V + O! `->` Let + O + be + PP!
Don't + V + O! `->` Don't let + O + be + PP!
Ex: Open the book! `->` Let the book be opened!
Don't turn off the lights! `->` Don't let the lights be turned off!
b) V + O! `->` S (tân ngữ chuyển lên) + should/must + be + PP!
Don't + V + O! `->` S (tân ngữ chuyển lên) + should/must + be + PP!
Ex: Do this exercise! `->` This exercise should/must be done!
Don't look at the book! `->` The book should/must not be looked!
