When we write things down, it's important to keep things nice and clear, so it's easy to read. Sentences help us give an order, ask a question, state a fact, or express an emotion or idea. Words are ...

Let's talk about the plurals of compound nouns. I submit to you: passers-by, hangers-on, attorneys general, brothers-in-law, and culs-de-sac. What about "month end" how would that be pluralized?

This makes the two ideas equal in the sentence - if you take away one part of it, you are left with a simple sentence again. These are very common when speaking and they are not difficult to ...