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If he is alive ,he would have become a teacher.这句是错句吧?

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If he is alive ,he would have become a teacher.这句是错句吧?
虚拟的是过去 从句里应该是had be吧
If he is alive ,he would have become a teacher.这句是错句吧?
If he is alive看出其虚拟的是现在
再问: 虚拟现在谓语部分不应该是did was的形式么
再答: 时间 从句谓语形式 主句谓语形式 将来 动词过去式(be用were) should + 动词原形 were to + 动词原形 would / should / might /could + 动词原形 现在 动词过去式(be 用 were) would / should / might / could + 动词形 过去 had +动词过去分词 would / should / might / could have + 动词过去分词
再问: 你说虚拟的是现在 那从句里谓语部分是is 而不是were
再答: 不好意思,我题没看全 该题我一打眼就觉得不对 所以如果从句用一般现在时不应为虚拟 从句里应该是had be