请问where he's going?结构为什么是He'不是 is he?

请问where he's going?结构为什么是He'不是 is he? Where is he going?还是where is he going to? 为什么不能用Where is he going to? Where+is+he/she+going+on+New+Year's+Day+and+how+will+he/she+ Where is he going?怎么回答 where is he going?的回答 where does he live 为什么不是 where does he lives? where is she going when is he going to do? Jim is never late for school,is he 为什么是is he 不是does he 请问大家where's Mr Evans?he is gone to washington还是 he has gone where he is where is he he has refused to help them 为什么是S+V+DO结构?refuse不是不及物动词吗?