`text{1.}` Unless you want to go to see the concert, you can leave your ticket for me.
`text{2.}` Unless students go to school on time, they will be punished.
`text{3.}` Unless the young girl stops smoking, she may suffer from lung cancer.
`text{4.}` Unless you pay back the money you owe me, ,I will sue you.
`text{5.}` Unless you are older than 18, I will not sell you these beer packs.
⇒ `text{CT :}` If ⇔ Unless
`text{+}` Thay If= Unless, giữ nguyên 1 vế và trái vế còn lại.
`text{+}` Đảm bảo vế sau Unless không có not.