This box is so heavy that i can`t carry it.（改为同义句）This box i

This box is so heavy that i can`t carry it.
This box is __heavy __me __carry.
too for to
This box is too heavy for me to carry.
so that
句型 so...that 如此..以致..
表示由什么而导致什么
It rains so heavily that we can not go out.
too to
句型 too..to 太..而..
表示由于..而不能..
The little boy is too young to carry this heavy box.