作业帮能为俺讲解一下虚拟语气啊?
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/09/18 12:41:55
能为俺讲解一下虚拟语气啊?
什么：与过去相反,与现在相反,与将来相反,老师上课讲的是把所有时态都往前推一下,
什么：与过去相反,与现在相反,与将来相反,老师上课讲的是把所有时态都往前推一下,
你老师说的时态往前推一下,应该是现在时改为过去时,过去时改为过去完成时吧.
用法及动词形式
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
例句：1．If I were you,I would take an umbrella. 如果我是你,我会带把伞.（事实：我不可能是你）
2．If I knew his telephone number,I would tell you. 如果我知道他的电话号码,我就会告诉你.（事实：不知道）
3．If there were no air or water,there would be no living things on the earth. 如果没有水和空气,地球上就不会有生物.(事实：地球上既有空气也有水)
4．If I had any money with me,I could lend you some. 如果我带钱了,我就会借给你些.（事实：没带钱）
5．If he studied harder,he might pass the exam. 如果他再努力些,就能通过考试了.（事实：没有努力）
6．she looked at me as if I had been a stranger. 她看我的样子好像我是一个陌生人.（事实：我并非陌生人）
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
例句1． If I had got there earlier,I should/could have met her. 如果我早到那儿,我就会见到她. （事实：去晚了）
2．If he had taken my advice,he would not have made such a mistake. 如果他听我的劝告的话,就不会犯这样的错误了. （事实：没有听我的话）
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
从句：②if+主语+did/were
主句：②主语+should/would/could/might+do
从句：③if+主语+should+do
主句：③主语+should/would/could/might+do eg：
1．If he should come here tomorrow,I would talk to him. 如果他明天来这儿的话,我就跟他谈谈.（事实：来的可能性很小）
2．If there were a heavy snow next Sunday,we would not go skating. 如果下周日下大雪,我们就不能去滑冰了.（事实：不知能否下雪）
3．If she were to be here next Monday,I would tell her about the matter. 如果她下周一来这儿的话,我就会告诉她这件事的始末.
就针对你说的,稍微说一下,具体的可以搜百度.
用法及动词形式
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
例句：1．If I were you,I would take an umbrella. 如果我是你,我会带把伞.（事实：我不可能是你）
2．If I knew his telephone number,I would tell you. 如果我知道他的电话号码,我就会告诉你.（事实：不知道）
3．If there were no air or water,there would be no living things on the earth. 如果没有水和空气,地球上就不会有生物.(事实：地球上既有空气也有水)
4．If I had any money with me,I could lend you some. 如果我带钱了,我就会借给你些.（事实：没带钱）
5．If he studied harder,he might pass the exam. 如果他再努力些,就能通过考试了.（事实：没有努力）
6．she looked at me as if I had been a stranger. 她看我的样子好像我是一个陌生人.（事实：我并非陌生人）
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
例句1． If I had got there earlier,I should/could have met her. 如果我早到那儿,我就会见到她. （事实：去晚了）
2．If he had taken my advice,he would not have made such a mistake. 如果他听我的劝告的话,就不会犯这样的错误了. （事实：没有听我的话）
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
从句：②if+主语+did/were
主句：②主语+should/would/could/might+do
从句：③if+主语+should+do
主句：③主语+should/would/could/might+do eg：
1．If he should come here tomorrow,I would talk to him. 如果他明天来这儿的话,我就跟他谈谈.（事实：来的可能性很小）
2．If there were a heavy snow next Sunday,we would not go skating. 如果下周日下大雪,我们就不能去滑冰了.（事实：不知能否下雪）
3．If she were to be here next Monday,I would tell her about the matter. 如果她下周一来这儿的话,我就会告诉她这件事的始末.
就针对你说的,稍微说一下,具体的可以搜百度.