it這里是形式主語,真正的主語是to get to London
也就是To get to London takes xx hours.
[用多少時(shí)間] 要用動(dòng)詞take
因此這里不能把take換成get,It gets xx hours to get to London.是不正確的用法
其次,你把不定式to get to London 改成介詞短語to London 是可以的,句子因此變成
To London takes xx hours.= It takes xx hours to London.
簡單來說,take對(duì)應(yīng)的是時(shí)間(不能換成get）,get這里對(duì)應(yīng)的是地點(diǎn) (可以換成reach)
how far is the hill from my home?和
how far is it from the hill to my home?都可以,前者更常用.
前者的主語是The hill.因此回答是 The hill is xx miles from my home.
后者主語是It.回答是It is xx miles from the hill to my house.
it 指代 distance.