needs体现一般现在时的三单形式,所以借助助动词does帮助否定和疑问. 否定句：He doesn't need any flowers.(some常用于肯定句中,any常用于否定句/疑问句中） 一般疑问句：Does he need any flowers? 肯定回答：Yes,he does. 否定回答：No,he doesn't.
这里的need后面不是动词，应该是实义动词，不是情态动词，原句应该是He needs some flowers. 否定句：He doesn't need any flowers. 一般疑问句：Does he need any flowers? 肯定回答：Yes, he does. 否定回答：No, he doesn't.
