为什么不是the ice is too thin to skate on （it)?

为什么不是the ice is too thin to skate on （it)? the ice is too thin ------ A to skate on it B skating on it The ice is too thin ____ us to skate ____ A for / B to on C The ice is too thin.You can't skate on it.改为同义句 The ice is too thin for us to skate on.的同义句（2） The ice is too thin for us to skate on.（改写同义句） This ice is too thin to skate on.(保持句意不变) This ice is------- The ice is so thin that we can't skate on it为什么要加it 一个句子最主要不 The ice is too thin for you to walk on .等于The ice is so thin The lake has f___ overnight but the ice is too thin to skate The ice is so thin that you can't skate on it the ice is so thin that wen can't skate on it 同义句