Wear out 可以表示鞋、衣服或物品因使用而磨损到不能用，也可以表示把人累得精疲力尽。Worn out 可以像形容词一样使用：worn-out shoes 是穿坏的鞋，I'm worn out 表示一点力气都没有了。
想在对话中用 wear out 吗？
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shoes/clothes + wear out; wear + something + out; wear + someone + out; be worn out
- I walk to work every day, so my shoes wear out in a few months.
- The kids ran around the park all afternoon and completely wore me out.
- After three night shifts in a row, she was completely worn out.
修改原因
修改前My trainers are completely weared out, so I need a new pair.
修改后My trainers are completely worn out, so I need a new pair.
Wear 是不规则动词：wear、wore、worn。Weared 套用了规则动词的变化方式，却不是它的正确形式。应使用 worn out，既能描述穿坏的鞋，也能描述极度疲劳。
Worn out 比 tired 程度更强：I'm tired 表示需要休息，I'm worn out 表示已经累坏了。某人或某事让你很累时，代词放在动词和小品词中间：The kids wore me out，不能说 wore out me。
动手练习
I've worn these boots every day for three years, and they're finally ___.
查看答案
worn out — 这双靴子每天穿，穿了三年，终于磨损得不能用了，所以选 worn out。Wear off 描述某物逐渐消退或消失，例如涂层、字迹或药效，不用于这里的整双鞋。
写一个让你精疲力尽的日子或活动。说明当时具体做了什么，以及花了多少小时。
Moving my sister into her new flat wore me out: we carried boxes up four floors for six hours.
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