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可以这么理解吗?与过去相反的:if + 过去完成时+主语+would 现在完成时例句:If i had listened

来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/07/14 07:30:57
可以这么理解吗?
与过去相反的:if + 过去完成时+主语+would 现在完成时
例句:If i had listened to my mom,i would have been a scholar now.如果我当时听我妈妈的话,我早就成为一名学者了.
与现在相反的:if+ 一般现在时+ 主语+ would 动词原形
例句:If i were a millionaire,i would buy a plane.(如果我是个百万富翁,我就会买架飞机)
这是虚拟语气的问题,一般就是
1、表示与现在事实相反的情况:
从句:主语+过去时
主句:主语+should/would/could/might+do
2、表示与过去事实相反的情况
从句:主语+had done
主句:主语+should/would/could/might+have done
3、表示对将来情况的主观推测
从句:①if+主语+were to do
主句:①主语+should/would/could/might+do   ②if+主语+did/were ②主语+should/would/could/might+do    ③if+主语+should+do ③主语+should/would/could/might+do