English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
PREPOSITIONS
Professor Adeleke Fakoya is an authority ~in~ English grammar (nonstandard).
Professor Adeleke Fakoya is an authority on English grammar (standard).
Cut the pineapple ~into~ two (nonstandard).
Cut the pineapple in two (standard). Note that things are cut in half and in two (not, into half and into two) but you can cut into pieces, slices and crumbs.
Let her write it ~with~ a pencil (nonstandard).
Let her write it in a pencil (standard).
GAB
