Student or Learner
It's a regret that I can't show the picture of the following description, and I learned from a grammar book that "below" always has space between two things, while "under" can have either space or not.
In the picture, "enamel" and "dentin" are right next to each other without any space, so does the "below" have to be corrected to "under"? Or isn't the rule that strict?
ex)The human tooth is composed of many different parts. Most familiar to us is the top section called the crown, the shiny outer surface of which is made of enamel. Just below the enamel, the crown turns to dentin, a substance harder than bone...
Last edited by keannu; 29-Mar-2012 at 02:08.
In my opinion, the rule isn't that strict. In the case of a tooth, where each layer is in contact with the one above it, "below" and "under" both sound natural to me. In fact, in the similar example of the layers of the earth's crust, to say that they lie "one below the other" seems more natural that "one under the other".
not a teacher