1、用作介詞表示位置時，通常是靜態(tài)的，但有時也可能是動態(tài)的。如： The sun disappeared behind the clouds. 太陽躲到云層后面去了。有時若沒有上下文，同一個句子可能有幾種理解： A mouse scuttled behind the curtain. 意思1：一只老鼠跑到窗簾后面去了?！ ?/section>意思2：一只老鼠從窗簾后面跑走了。 意思3：一只老鼠在窗簾后面竄來竄去。2、 表示未能如期完成某事，通常用be behind with [in]，此時的 behind 為副詞。如：He is never behind with [in] his work. 他工作從不拖拉。He was behind in [with] his rent. 他拖欠了房租。若后接動詞，則用動名詞。如：The boy is behind in handing in homework. 這孩子沒能按時交家庭作業(yè)。He was never behind in offering suggestions. 他提建議從來不落在別人后面。3、 注意以下幾個短語的用法(其中的 behind 是副詞，不是介詞)： fall [drop] behind 落在后面 I’ve fallen behind in work. 我工作落后了?！?/section>Some students dropped behind in their studies.有的學生在學習上落在后面。leave sth behind （某人）走后留下（掉下）某物 What have we left behind? 我們走后留下什么了？ He left his umbrella behind. 他離開時沒有把雨傘帶走。stay [remain] behind 留下，在別人后面留下 He alone remained behind. 只有他一個人留下沒走。I had to stay behind after school. 放學后我還得留在學校。
