• Should she come, tell her to wait for me.
• Unless I come here early, I will miss the bus.
• Unless he does that, he will get no bonus.
• Unless she waters these trees, they will die.

1.If she should come,tell her to wait for me.
Unless.she should come, don't tell her to wait for me.
2.If i don't come here early,i will miss the bus.
Unless.I come here early, I will miss the bus
3.If she doesn't water these trees,they will die
Unless.she waters these trees, they will die.
4.If he doesn't do that,he will get bonus.
Unless.he does that, he will get bonus.
5.I only come if they invite me.
Unless they invite me, I don't only come.
7.If you don't leave the office,i will call the police.(or)
=>Leave the office or I will call the police.
8.You can't visit Paris unless you get a visa.(If)
=>If you get a visa, you can visit Paris