句子间没有连词的问题

请问为什么fade away后面没有任何连词就可以直接both ...have suffered?

We have seen invaluable traditional culture fade away, both people and animals have suffered from climate change, and we are trying our best to...

另外请教 We have to preserve what we believe is valuable这句的句法结构，这句中省略了那些成分,谢谢！

二个主谓结构并列时，需要并列连词连接。但如果是三个主谓结构并列，则只在最后二个之间用并列连词，第一个和第二个之间用逗号。你的这个句子就是如此。

We have to preserve what we believe is valuable.

这个句子没有省略任何成分。what为融合型关系代词引导名词性关系分句，这个分句相当于一个名词词组。what= the thing which。

We have to preserve the thing which we believe is valuable.

曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 1秒前

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