$1$.Unless he come to the party, she will be unhappy.
$2$. Unless they hurry up, you will miss the bus
$3$. Unless you are hard-working, you will fail the exam
$4$. If you don't get up early, you will be late for school
$5$. If he doesn't eat too much fast food, he won't be overweight
`->`Câu đk loại 1: If + S + V, S + will/won't + V
`->`If not = Unless: Nếu không