4图转让西湖接经机:He needs help,doesn't he?此处的反意疑问句中为什么用doesn't?

He needs help,doesn't he?此处的反意疑问句中为什么用doesn't? he needs treatments again IF HE NEEDS HIS SON TO DO SOMETHING what doesn't ask questions,but needs to be answered He dislikes playing the piano,______?应该是doesn't he?还是does he? He often doesn't his homework. (改错) 怎么翻译"What doesn't he do?" He is terribly ill.He needs a kind of __[power] He doesn't like English at all,so he s( ) speaks English in class. He doesn't feel well.He has a cold.__________ .Is it serious.