Неизменяемый предлог, вариант формы — «со» перед согласными для удобства произношения.
He came with his brother.
Он снял картину со стены.
He took the painting from the wall.
Он болеет с прошлой недели.
He has been ill since last week.
asused in expressions of equality of measure The bush is as tall as a child.
fromused for future or neutral starting points in time expressions likeinformal comparative use