1.5FT快步永远不会遭致借机攻击。人物只能AO他威胁范围内的生物
2.withdraw是一个需要提前声明的全回合动作，在你离开你当前所占据的格子时，你不会遭受AO。在这个情况下，如果你宣布withdraw 20FT，那么不会遭致借机攻击。如果移动20ft离开威胁范围，那么这次移动会遭到借机攻击，而施法则不会遭致借机攻击
3.Provoking an Attack of Opportunity: Two kinds of actions can provoke attacks of opportunity: moving out of a threatened square and performing an action within a threatened square.
Moving: Moving out of a threatened square usually provokes an attack of opportunity from the threatening opponent. There are two common methods of avoiding such an attack—the 5-foot-step and the withdraw action (see below).
Performing a Distracting Act: Some actions, when performed in a threatened square, provoke attacks of opportunity as you divert your attention from the battle. Table: Actions in Combat notes many of the actions that provoke attacks of opportunity.
Remember that even actions that normally provoke attacks of opportunity may have exceptions to this rule.
