He is very happy to do his homework.这句话既有be动词is,又有助动词do,

He is very happy to do his homework.这句话既有be动词is,又有助动词do, He is very happy to does his homework.这句话does要换成do吗?迷糊了 He often forgets to do his homework,he is very(care ) He is busy ﹍(do) his homework He must do his homework,的谓语动词是什么? It is not difficult to get to school 为什么既有be动词又 be动词(is,are...)后面,什么时候+doing,什么时候+to do he is going to do his homework为什么用do不用does he isn't careful enough to do his homework .改为同义句 he is ____ He has to do his homework first.改为一般疑问句.The weather is nice but he has to 【】 his homework first A.do B.does C.doing D,is He is going to watch TV after ____ his homework.A.do B.doing