how mang rulers are there in the pencilbox这句话对么,为什么要加are there

how mang rulers are there in the pencilbox这句话对么,为什么要加are there How mang people are 英语翻译how mang animal are they?how mang animal are there?是哪一个? How mang How mang How much are the rulers?=同义句 how mang seasons are there in ayear?what are they? how mang seasons are there in ayear?what are they? 中文翻译：How mang classrooms are there in our school? how mang shop assistants are there in the shop How mang boks are there in the bag = how mang students are there in your classyisi how mang books are you got 怎么回答 how mang people are mentioned in this passage?的意思? how mang times you are 一首歌 叫啥 How mang people are there in your family?的意思 how mang people are there in canada?同义句转换 How mang red things are there?的汉语