the twins need some bananas.改为否定句

the twins don't need any bananas

The twins don't need any bananas.

否定句和一般疑问句some改成any。
但是需要得到别人肯定回答的一般疑问句不用改。如：
Can you give me some paper?
你能给我一些纸吗？
Would you like something to eat?
你想吃东西吗？

等等。

need是实义动词,改否定要用助动词
因为the twins 是复数,所以用don't
在否定句或一般疑问句中some改成any
所以以下为正解
The twins don't need any bananas.
<附:当some在祈使句中不用变any

这里的need不是情态动词，是实意动词，因此need否定直接加not，如是情态动词，则要用mustn't
正确答案为the twins don't need any bananas

The twins don't need any bananas.

The twins don't need any bananas.