how many ball pens are there in the pencil-box?为什么中间要加are there?

How many ball pens do they have?They have fourty哪里错了 how many ball pens are there in the pencil-box?为什么中间要加are there? How many pens is there? How many pens do you have? 改正错误How many are the pens? How many pens ____she a,is there b,are there c,does have d,do have How many pens can he buy _____the money.A.for B.with C .use D.on 连词组句 many,how,pens,have,you,do（?） 连词成句：pens many you how have do how.you.pens.many.have.do(?) (连词成句) 连词成句.many do how pens you have? How many pens are therein your pencil-box怎么回答 How many are the pens这句话哪里错了 how many pens do you have?可以这样译吗?有什么区别?how many pens have you got? ---How many pens are there in your pencil-box?---_______.A.No. B.None.C.Neither D.Either. i have many pens .lucy has ___ pens than me .A.many B.more C.much _______ on the table?there are some books and pens.A.what are B.how many are C．what'sD.how much is “他有多少支钢笔”用英语怎么说?How many pens does he have?还是How many pens do he have?