1.If I were in your shoe,I would try my best
=> Were I in your shoe, I would try my best.
2. If you don't get up earlier,you will miss the bus
=> Unless you get up earlier, you will miss the bus.
3. Should I go to the city next monday,I will visit my relatoves
=> If I go to the city next monday, I will visit my relatoves.
4. Were he a bird,I would bes dove
=> If he were a bird, I would bes dove.
5. Were I not to know him,I wouldn't talk to him.
=> If I didn't know him, I wouldn't talk to him.