1.  Unless she whispers, everyone knows what she is saying.
If she doesn't whisper, everyone knows what she is saying.
2.  Stay here and you will feel safe.
If you stay here, you will feel safe.
3.  Pay electricity bill today or your electricity will be cut off.
If you don't pay electricity bill today, your electricity will be cut off.
4.  Stop smoking otherwise your cough may be worse.
If you don't stop smoking, your cough may be worse.
5.  He doesn’t have a bicycle, so he always goes to class late.
If he had a bicycle, he wouldn't always go to class late.
6.  I am bad at English, so I can’t do homework.
If I weren't bad at English, I could do homework.
7.  He doesn’t practise speaking French, so he doesn’t speak it fluently.
If he practised speaking French, he would speak it fluently.
8.  We didn't go pinic because it rained.
If it hadn't rained, we would have gone picnic.
9. We didn't go on holiday because we didn't have enough money.
We would have gone on holiday if we had had enough money.
10.  Susan felt sick because she ate four cream cakes.
Susan wouldn't have felt sick if she hadn't eaten four cream cakes.