Unless-If not. If it doesn't rain, we can play tennis

Unless-If not
1.If it doesn't rain , we can play tennis
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2.If you are not careful , you will cut your self with that knife
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3.If she doesn't hurry , she will be late
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4.If they don't come early . I'll not give them that report
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5.If you don't drive more carefully , you will have an accidents
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