revolve, evolve, involve

　　revolve v.旋轉，轉動。

　　The room began to revolve , then he fainted.屋子開始旋轉，然后他就昏倒了。

　　evolve v.發展，演變。

　　Agriculture evolved slowly over thousands of years.幾千年來，農業發展得很緩慢。

　　involve v.需要，包含;使卷入，牽涉。

　　Getting a drivers licence involves learning how to drive, studying the rules of the road, and taking a test.要得到駕駛執照需要學習開車，學習交通規則，還要經過考試。