1. afternoon,作名词,意为“下午,午后” In the afternoon they went shopping.他们下午去购物了。The baby always has an afternoon nap.婴儿午后总要睡一会儿。2. afterwards,作副词,意为“以后,后来” Let's go out now and eat afterwards.咱们现在出去,然后再吃饭。Afterwards she was sorry for what she'd said.后来她后悔说了那些话。3. again,作副词,意为“再一次,又一次”等 When will I see you again?我何时能再见到你?I've told you again and again not to do that.我一再告诉过你别干那种事。4. against,作介词,意为“反对,违反,紧靠,倚”等 I don't want to go against your will.我不想违背您的意愿。He is leaning against the rail.他靠在栏杆上。5. age,作名词,意为“年龄”等 He left school at the age of eighteen.他18岁读完中学。When I was your age I was already married.我在你这个年纪时已经结婚了。