exercise 4 .rewrite the flowing sentence with the same meaning
1 if you don't study harder ,you 'll fail the next exam
=> Unless........................................................................
2 if he doesn't practiese writing every day ,he can't improve his writing skill
=>Unless...............................................................................
3,Unless this man is a drive ,he can't help you move by car
=>If.........................................................................................
4 Unless you go out more often ,you might fall ill
=>If.......................................................................................
5 if you don't return this book to the library today,you 'll have to pay a fine
=> Unless..........................................................................................
6 Unless he cleaned up the car now ,his book could ask him to do this
=> if...........................................................................................
7 Unless they were absent now ,they would meet the haedmaster
=> if.................................................................................................
8 if I didn't know the number ,I would not ring her up
=>Unless..........................................................................................
9 If my sister didn't have a terrible headache she wouldn't be absent from her class
=>Unless...................................................................................................
10 If Peter didn't study hard ,he could not get good marks
=> Unless...........................................................................................
