it's just a short distance from here to the resturant 的句子成分解释一下哪个是主语哪个是宾语==

问题描述:

it's just a short distance from here to the resturant 的句子成分解释一下哪个是主语哪个是宾语==

It (形式主语) is (系动词) just a short distance (表语) from here to the resturant.(真正主语);
句子意思:从这里去饭店只有几步之遥.