166. like, as　　

like相似关系，但并不等同；
as同一关系，两者实为一体 例：Don't treat me as a child. (In fact, I'm a child.)

167. after, in (表时间)　　

after接时间点；例：after 7:00
in接时间段 例；in five minutes

168. between, among

between两者之间，三者或三者以上两两之间；例：Switzerland lies between France, Germany, Australia and Italy.
among三者或三者以上之间

169. after, behind (表位置)

after强调次序的先后；
behind强调物体静态位置的前后 例：There are many trees behind the house.

170. since, for (完成时间状语)

since接点时间或一句话；例：since 3:00
for接一段时间 例：for three years