Is the preposition 'across' correct in the following sentence.
He ties the strip to the window frame. He climbs across the window sill and lowers himself down to the garden below using the bed sheet.
On first reading, I thought YES. But actually, the word you should use is 'over'.
The window sill is the wood across the bottom of a window. So to climb across the window sill would really mean he went from left to right (or right to left). He is climbing out of the window, into the garden, so he is climbing 'over' the sill.