英语中的for,to,at,of,in,on,with的用法答:一、介词按其构成可分为:1. 简单介词 at, in, on, to, since, until 等。如:He's worked there since 1998.2. 复合介词 into, onto, out of 等。如:She is out of school. 她毕业了。3. 二重介词 from under, from behind, from out of, until after, except in 等。如:I'm...