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you look at yourself up and down to see if there is anything

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you look at yourself up and down to see if there is anything wrong with you.这里为什么用anything?
这里为什么用anything?又不是否定句,为什么不用something,是什么原因?用something 代替行不行?
you look at yourself up and down to see if there is anything
当if 引导条件句或宾语从句时,不定代词必须用anything.
使用anything 的场合是:
1 疑问句
2 否定句
3 if
4 作“任何事”讲时,用于肯定句.如 Anything has a hard beginning.