she hasn't found her pen for 30minutes
完全的否定：She has no pencil.== She does not have any pencil.一般否定：She does not have a pencil.强调“完全没有” 用第一种讲法。不强调，可以用第二种讲法。
she has no pencil =she doesn't have a pencil.
she doesn't have a pencil
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宜木构思家具
