Yes, I've read The Hobbit and LOTR to my four children, individually: The Hobbit to each of my three daughters (1996, 1999, 2005), and LOTR to my son (1994), and two of my daughters (1999, 2001; my wife, rather than I, read LOTR to our third daughter). They'd usually have been around 10-12 at the time. My wife and I homeschooled our children and there was a great deal of reading to the children -- fiction, nonfiction, and things in between (like the Laura Ingalls Wilder "Little House" books). With Tolkien, typically the child followed along in his or her own copy of the book as we read aloud. (I wouldn't have bought them their own copies if I hadn't figured they'd be interested.) One thing that prompted the LOTR reading was that I wanted to make sure they had all read the book before seeing any of the movies.
We wouldn't have persisted in the reading with any child who didn't like Tolkien. They all did. I think at least in some cases a child was "prepared" for Tolkien by my reading the George MacDonald book The Princess and the Goblin, etc.
My wife and I read "with expression," but we didn't worry too much about how to do the various voices -- Tolkien is a good writer, and it isn't necessary to try to sound like one actor here and another actor there, etc.
Depending on various things it might take a few weeks to read LOTR or several months. This Tolkien reading was always a good experience.
I also read Smith of Wootton Major and farmer Giles of Ham to them, but these were often read to more than one child at a time.
None of this Tolkien reading was part of "lessons." My wife and I wanted to establish a family culture that included lots of reading; this was all reading for enjoyment. Of course, since it was Tolkien, it included a very strong element of "teaching" children to love language and nature. Ours was also a household that emphasized walking. We live in rural North Dakota. About four blocks from home is the grocery store, the bank, the movie theater/cinema, a library, etc. About two blocks in the other direction are woods, a river, deer, beavers, bald eagles on rare occasions, wild turkeys occasionally, etc. Without my having to be all overt about it, I could help the children's imaginations be formed by Tolkien and by the smell of chilly wet woods in October, etc. By the way, lest anyone fear the combination of homeschooling and Tolkien would result in passive dreamers -- they're all employed now -- videographer for a Fargo television news outfit, tech for chemical and alcohol dependency in Fairbanks, engineer in medical technology in Minneapolis, secondary school language assistant in Metz, France; so they didn't turn out to be hikikomori or something. The oldest is 30 and the youngest is 22.