If the same preposition be required by several nouns or pronouns, it must be repeated in every case if it be repeated at all. “He is interested in philosophy, history, and in science.” This sentence may be corrected by placing in before history or by omitting it before science. The several subjects are individualized more strongly by the use of in before each noun. This is shown in the greater obscurity given to history by the omission of the preposition in the foregoing sentence.
“We may have a feeling of innocence or of guilt, of merit or demerit.” Insert of before demerit.
Needless Prepositions
Prepositions, like other parts of speech that contribute nothing to the meaning, should not be suffered to cumber the sentence.
Where am I at? Where is my book at? I went there at about noon. In what latitude is Chicago in? Where are you going to? Take your hat off of the table. Where has James been to? They offered to Caesar a crown. This is a subject of which I intended to speak about (omit of or about, but not both). She has a sister of ten years old. Leap in with me into this angry flood.
The older writers employed the useless for in such expressions as, What went ye out for to see? The apostles and elders came together for to consider of this matter.
All of
A very common error is the unnecessary use of the preposition of after all; as, “during all of this period,” “in all of these cases,” “for all of the conditions,” etc.
Up above
In most cases one of these prepositions will be found useless. “The ladder reached up above the chimney.”