had been
整句為：He said he had been to Beijing three years ago.
他說他三年前到過北京.我也是這么想的，但答案給的是 went答案是go原型?是went個人意見：用went也可以 因?yàn)楹竺嬗斜容^明確的時間狀語three years ago那had been可以嗎個人認(rèn)為也可以。