1(Q) - Unless he finds a job soon, his family will starve.
1(A) - If he doesn't find a job soon, his family will starve.2(Q) - Unless she leaves now, she will miss the train.
2(A) - If she leaves now, she will not miss the train.3(Q) - Unless you hurry, we will leave you behind.
3(A) - If you hurry, we won't leave you behind.
1st answer put negative/not in front of find, not behind will. (Not every time behind modal verb; why is that?)
2nd answer put negative/not behind will, not in front of leave.
3rd answer put negative/not behind will, not in front of hurry.
I want to know where to put not/negative when used in conjunction with if/unless.