1.) Is this sentence gramatically correct::----
Book A is far better as it is compared to Book B.
................if it is not correct then pls mention the point where i hav commited the mistake and pls also give the correct sentence with some examples to make the logic clear.
Book A is far better than Book B.
Or maybe:
Compared to Book B., Book A is far better.
2.) Pls tell me the correct use of phrase "come across" with the help of examples.
You could probably search the internet for some better examples; but here are two different examples of the use of "come across".
1. To find unexpectedly: "I was shopping for some blue hair dye, when I came across a wig which was the exact shade of blue that I wanted; so I bought the wig instead of the hair dye.
2. To give the impression of: "He comes across as unfriendly; but he's really very nice. He's just shy."