behindthebox,intothebox

培生英语之《what is in the box?》
(人教 pep )三年级英语下册课件 toy box it's in the toy box.
in front of,behind,where is the pencil it's ,where are the
where did you find the box i found it (in/on/under/behind)
in front of 在……前面 behind 在……后面