這句話對(duì),除了打字錯(cuò)誤yong---->young
he said he could swim when he was very young我想問(wèn)一下 為什么這里的 was 不往后退一個(gè)時(shí)態(tài)直接變間接不應(yīng)該變時(shí)態(tài)嗎不必，為什么若原句為一般現(xiàn)在時(shí)：he says :" I could swim when i was very yong"，改成間接引語(yǔ)，還是he says he could swim when he was very young，對(duì)嗎？還是有點(diǎn)不明白