1. adult,作名词或形容词,意为“成年人,成人的”等 Children must be accompanied by an adult.儿童必须要有大人陪同。I've lived most of my adult life in London.我成年之后的大部分时间都是在伦敦度过的。2. advance,作名词或动词,意为“前进,进步,发展”等 The fire advanced steadily through the forest.大火不断地在森林中蔓延。If you're going to come, please let me know in advance.如果你要来,请提前告诉我。3. advanced,作形容词,意为“先进的,发达的,高级的”等 This is the most advanced type of engine available.这是目前最先进的发动机。There were only three of us on the advanced course.只有我们三人学高级课程。4. advantage,作名词,意为“优势,有利条件”等 She had the advantage of a good education.她具有受过良好教育的有利条件。Being tall gave him an advantage over the other players.他个子高,比其他运动员有利。5. adventure,作名词,意为“冒险,冒险经历”等 When you're a child, life is one big adventure.在孩提时代,生活是一次大不寻常的经历。She had some exciting adventures in Egypt.她在埃及经历了一些激动人心的冒险。