新概念3有个句子不太明白experts confirmed that a puma will not attack a

新概念3有个句子不太明白
experts confirmed that a puma will not attack a human being unless it is cornered.为什么这里will不用过去式啊
The experts were now fully convinced that the animal was a puma 这个句子你看都用过去式
softwolf 1年前 已收到2个回答 举报

comichunte 幼苗

共回答了20个问题采纳率:85% 举报

experts confirmed that a puma will not attack a human being unless it is cornered.
这里a puma will not attack a human being unless it is cornered阐述的是客观规律,不需要改变时态.

1年前

9

ab5cdfwx 幼苗

共回答了1665个问题 举报

a puma will not attack a human being unless it is cornered 这个是当作真理,客观事实,所以不用改变时态。对所有的 puma 都适用。
that the animal was a puma 这个只是对那里出现的一个动物,不是普遍适用的真理。所以用一般过去时。

1年前

2
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