Tired：可指因体力或脑力消耗太多而需要休息，还可指因长期做某事而失去兴趣。 例：Henry was so tired that he went to bed immediately after he got home.亨利很疲惫，一到家就上床睡觉了。 Exhausted：指因劳累过度而精疲力竭。 例：The exhausted engineer fell asleep on the bus.筋疲力尽的工程师在公交车上睡着了。 Fatigued：所表达的疲劳程度比tired和weary强，表示由于过度劳累而引起疲乏，不能再继续下去。 例：He felt fatigued and did’ t want to say a single word.他疲惫不堪，不想说一句话。 Weary：语气比tired强，指由于长时间努力工作或由于做单一的事而引起疲倦。 例：After a long and weary wait, the plane finally came to take them back.经过漫长而又令人疲乏的的等待后，飞机终于来接他们回去了。 Be weary of 对……厌倦 Wear out：这个词不太正式，多用于口语。 例：The troops were worn out after winning the battle.战后，部队疲惫不堪。
