Unless --If

    If you do not like this one, I’ll bring you another.

--> Unless (a)   , I’ll bring you another.

  If she does not hurry, she’ll be late

Unless (a)   ,she’ll be late.

  If you are not careful, you’ll cut yourself.

Unless ………………………………………………………………you’ll cut yourself.

(a)  

 If you had not sneezed, he wouldn’t have known that we were there.

Unless ……………………………………………….., he wouldn’t have known that we were there.

(a)  

I won’t come come if they don’t  invite me.

=> Unless (a)   , I won’t come come.

If he didn’t revise all his lessons, he would failed the exam.

=> Unless ……………………….., he would failed the exam.

(a)  

If he doesn’t come soon ,I’ll call the police.

=> Unless (a)   , I’ll call the police.

They would be upset if she couldn’t come.

=> Unless (a)   , they would be upset.

Unless he takes a taxi, he will be late.

--> If   (a)   , he will be late.

Unless he helped us, we couldn’t do the task.

--> If (a)   , we couldn’t do the task.