What's a good way to write an introduction paragraph for an expository essay?

Use it as an introduction and introduce what your going to be writing about in it.

Explanation:

An introduction is basically giving a very brief description of the contents of the paragraph. In a introduction paragraph, you want to briefly but clearly state what your going to be writing about.

use it to buy the fattest block of cheese

- "when these words are put together to convey a meaning it is known as a sentence. a sentence is a group of words that makes complete sense. placing of words in a sentence is very important. the second sentence is a question."