Hi. Ahmed and the Parser,
Hi, which is correct:
a- ''It is a really good book.''
b- ''It is really a good book.''
This is just to clarify the Parser's answer, with which I agree. Both are correct. 'Really' works as an intensifier in 'a' meaning 'very'. In 'b', it is close in meaning to 'actually'. It may be used when you have a different impression (opinion) about that book. I don't think the usage of commas is necessary here.