Unit 5 You must come to school on time.Section A情态动词情态动词 must 运用运用must must 的中文意思是“必须”。mustntmustnt 则是 must not 的缩写形式,表示“不能”,态度坚决。You must come to school on time.你必须准时到学校。You mustnt be late for school.你不能迟到。We must listen to the teacher.我们必须认真听老师上课。We mustnt be use a cell phone.我们不能用手机。You must do your homework.你必须做家庭作业。You mustnt make a noise in the classroom.你不能在教室吵闹。You must clean the blackboard.你必须把黑板擦干净。下面的一些图标,都与下面的一些图标,都与mustnt 有关,你知道它们的意有关,你知道它们的意思吗?思吗?No photos!=You mustnt take photos here!No smoking!=You mustnt smoke here!Homework用用must 和和 mustnt 各造两个句子各造两个句子Thank you!