he is helping the girl _____(穿) a blue blouse and a white skirt
问题描述：
he is helping the girl _____(穿) a blue blouse and a white skirt
答
he is helping the girl _(to)__put on__(穿) a blue blouse and a white skirt
强调往上穿 .动作
help do/to do那如果是：he is helping the girl___(穿）a red dress with her English over theresorry 用in , 表状态