他喜欢游泳,是吗? 他昨天去游泳,是吗? 他们很年轻,是吗? 他昨天买了些...答:你好!正确答案为:Does he like swimming,doesn't he?He swam yesterday,didn't he?They are very young,aren't they?He bought some applges,didn't he?Your sister is beautiful,isn't she?The dog is under the chair, isn't it?He isn't a teacher, is he?You don't like ...