We must use both hands to accept a present.改否定句确定要用either吗?有没有可靠的语法证明呢?谢谢

问题描述:

We must use both hands to accept a present.改否定句
确定要用either吗?有没有可靠的语法证明呢?谢谢

We needn't use either hand to accept a present.
否定句要将both改成either

We needn't use both hands to accept a present.