[Note.]—An occasional short sentence is permissible, even desirable. Successive short sentences may be used to express rapid action, or emphatic assertion, or deliberate simplicity. Otherwise, avoid them.

Exercise:

  1. Decatur has wide streets. The streets are paved with brick, asphalt, and creosote blocks.
  2. Sixteen posts are set in a row. All of these are at equal intervals.
  3. The boat approaches the leeward side of the ship. This side is the side protected from the wind.
  4. The Scientific American reports the progress of science. It explains new inventions. It makes practical applications of scientific principles.
  5. The beans are usually harvested about the middle of September. They are cut when the plants turn color at the roots and the beans turn white. They are cut by a bean-cutter which takes two rows at a time.
[Excessive Coördination]

In structure a sentence may be

  1. Simple: The rain fell.
  2. Compound: The rain continued and the stream rose.
  3. Complex: When the rain ceased, the flood came.

In B, the clauses are of almost equal importance, and the first is coördinated with the second. In C, the clauses are not of equal importance, and the first is subordinated to the second. And is a coördinating conjunction. When is a subordinating conjunction. For a list of connectives see [36].

14. Do not use coördination when subordination will secure a more clear and emphatic unit of thought. Especially do not coördinate a main idea with an explanatory detail. The speech of children connects all ideas, important and unimportant, with and. Discriminating writers place minor ideas in subordinate clauses, consign still less important ideas to participial or prepositional phrases, and omit trivial details altogether.