He is very happy to does his homework.这句话does要换成do吗?迷糊了

He is very happy to does his homework.这句话does要换成do吗?迷糊了 He is very happy to do his homework.这句话既有be动词is,又有助动词do, How often does he do his homework?这句话错了吗,错在哪里? Does he do his homework? Does he do his homework?还是Does he his homework? he is going to do his homework为什么用do不用does but he has to 【】 his homework first A.do B.does C.doing D,is Does he do his homework on weekend? he does his homework after supper does能换成write吗? Bob does not like to do homework,he is ----- 是Is Tom going to do his homework?还是 Is Tom going to does his he does his homework very hard改为疑问句!为什么...