it is too heavy for me to lift 这个句子成分怎么划分

it is too heavy for me to lift 这个句子成分怎么划分 It is too heavy for me to lift the box.先怎么改成同义句? the box is too heavy for me to A carry it away B lift it up 句子分析：The box is too heavy for me to lift. 求分析语法成分最好细致一点 box is too heavy for me to lift. the love is too heavy for me to carry it The jar was too heavy for me to lift.(改为同义句) The jar was too heavy for me to lift.(改为同义句） 45. The bag is too heavy for me . A. to carry it B. not to c － This box is too heavy for me to carry it upstairs. The big box is too heavy for me to carry,后面为什么不加it This box is too heavy for me to carry it upstairs._____.A、 Y