You are welcome to answer questions posted in the Ask a Teacher forum as long as your suggestions, help, and advice reflect a good understanding of the English language. If you are not a teacher, you will need to state that clearly at the top of your post. Please note, all posts are moderated by our in-house language experts, so make sure your suggestions, help, and advice house the kind of information an international language teacher would offer. If not, and your posts do not contribute to the topic in a positive way, they will be subject to deletion.
What is the difference in the meaning of the above sentences?
There is not much difference between them. Only "A man gave me books this morning" is less usual. When we change a singular noun into plural we use some. example: a book- some books.
some books vs books 
Linear Mode
