a half of girls()in the classroom 填 is 还是are a group of girls()in_数学解答

a half of girls()in the classroom 填 is 还是are a group of girls()in the classroom 填 is 还是are

人气：293 ℃　时间：2020-06-21 20:20:25

解答

前一个填写　are 一半的女生在教室,一半女生,还是多个人,所以为复数
后一个填写is 一组女生在女生,这里以群,组为单位,是一个单位,为单数,用is