How to Use "oh" with Example Sentences

1. Oh , you don 't know what that is ?

2. Oh , and I sleep nine hours every night .

3. Oh , how funny-what a sight she saw there !

4. Oh look , another story about stealing from an unfortunate little girl related to you !

5. And remember the recent books regarding couples that made vows to do it , oh say , 365 nights in a row ?