to,of,at,for,do,about...加动词什么形式和固定词组?答:简单介词 at, in, on, to, since, until等。如: He's worked there since 1998.复合介词 into, onto, out of等。如: She is out of school. 她毕业了。二重介词 from under, from behind, from out of, until after, except in等。如: I'm from out of town. 我是从城外来的。...