坚守原则与变通:he carries a big box than mary’s 这句话错了，应怎么该？

he carries a big box than mary’s 这句话错了，应怎么该？ he carries a bigger box than mary’s 这句话错了，应怎么该？ a quite big box, quite a big box, 两个短语哪个准确？ He used a knife to open the box.(改为同义句) He ** the box ** a knife. He used a knife to open the box.(改为同义句) He ** the box ** a knife. He hid a box under his desk的问题. Big Box Mart什么意思 -----I met him, he was working as a secretary in a big company. 改错:He told me to open the box and made a wish. 请问Big Box customers 中文是什么意思???