If he is alive看出其虛擬的是現(xiàn)在虛擬現(xiàn)在謂語(yǔ)部分不應(yīng)該是did was的形式么時(shí)間從句謂語(yǔ)形式 主句謂語(yǔ)形式將來(lái) 動(dòng)詞過(guò)去式(be用were)should + 動(dòng)詞原形were to + 動(dòng)詞原形 would / should / might /could + 動(dòng)詞原形 現(xiàn)在 動(dòng)詞過(guò)去式(be 用 were)would / should / might / could + 動(dòng)詞形 過(guò)去 had +動(dòng)詞過(guò)去分詞would / should / might / could have + 動(dòng)詞過(guò)去分詞你說(shuō)虛擬的是現(xiàn)在 那從句里謂語(yǔ)部分是is而不是were不好意思，我題沒(méi)看全該題我一打眼就覺(jué)得不對(duì) 所以如果從句用一般現(xiàn)在時(shí)不應(yīng)為虛擬從句里應(yīng)該是had be