behind time一短语意为"晚了"，而behind the times意为"落后于时代"。behind是介词同时又是副词，如Come out from behind the door(介词). He's a long way behind(副词). He fell behind with his classmates(副词).[1]behind,介词,相关知识点

介词 behind 用法说明[1]behind单词记忆法◆记忆方法一：分析：be --- 是 hind --- 和 hand 手相似 记忆方法：好习惯是在上 厕 所之后要洗手。◆记忆方法二：联想方式：be~bee蜜蜂；hi嗨；nd难道记忆方法：蜜蜂的“嗨”难道来自我的后面？查看详情>>若后接动词，则用动名词。如：　　[2]动名词,名词,相关知识点without其

［误］ He missed the class because he was behind the time.

［正］ He missed the class because he was behind time.

［析］ behind time一短语意为"晚了"，而behind the times意为"落后于时代"。behind是介词同时又是副词，如Come out from behind the door(介词). He's a long way behind(副词). He fell behind with his classmates(副词).[2]副词,介词,相关知识点

across是副词或介词，但不能作动词用。［误］ The little boy is going to across the street.［正］ The little boy is going to cross the street.［析］ across是副词或介词，但不能作动词用。

behind the times相关单词意思与记忆法：

behind the times单词意思解释释义：
过时

behind time相关单词意思与记忆法：

behind time单词意思解释释义：
迟了