作业帮if应到的从句也要用虚拟语气吗?If you were arrested,what will the policeman ask you?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 16:58:26
if应到的从句也要用虚拟语气吗?If you were arrested,what will the policeman ask you?
if应到的从句也要用虚拟语气吗?
If you were arrested,what will the policeman ask you?
if应到的从句也要用虚拟语气吗?If you were arrested,what will the policeman ask you?
if作“如果”之意,如果表示对虚拟的不可能的事情作假设时就要用虚拟语气
if引导的条件状语从句的分类及虚拟条件句的判断
1.可以把条件句分为两类:
1).真实条件句(Sentences of Real Condition):凡是假设的情况发生性可能很大.就是真实条件句.例如:
⑴.If I have time . I will help you with this work.如果我有时间会帮助你做此工作的.
⑵.As long as I...
全部展开
if引导的条件状语从句的分类及虚拟条件句的判断
1.可以把条件句分为两类:
1).真实条件句(Sentences of Real Condition):凡是假设的情况发生性可能很大.就是真实条件句.例如:
⑴.If I have time . I will help you with this work.如果我有时间会帮助你做此工作的.
⑵.As long as I say anything wrong. you must point it out.只要我说了什么错话.你一定要指出来.
⑶.If time permits. we’ll go fishing together.(如果有时间的话.我们就一起去钓鱼.)
2).虚拟条件句(Sentences of Unreal Condition):当假设是不大可能实现时.就是虚拟条件句.例如:
⑴.If I were you . I would have attended the meeting. 如果我是你的话.就去参加会议了.
⑵.If he had come here yesterday. he would have seen his old friend.假如他昨天来这儿的话.就会看见他的老朋友.
⑴.If it had rained yesterday. we would have stayed at home.(如果昨天下雨的话.我们就会留在家里.)
2..if条件状语从句中虚拟语气的判断
判断是真实条件句还是非真实条件句.只有在非真实条件句中才使用虚拟语气.通过句子意思.看假设的条件是否能够实现.能够实现是真实条件句.不能使用虚拟语气,假设的条件不能实现则是非真实条件句.要用虚拟语气.
判断这个假设是与哪个事实相反.通常有三种情况:①与过去事实相反.②与现在事实相反.③与将来事实可能相反.
3.[后退一步法"
后退一步法是指在准确地判断了该句与哪一事实相反后.按虚拟语气的后退一步法处理从句谓语动词的时态.即:在非真实条件状语从句中.谓语动词按正常情况[后退一步".也就是:
①与过去事实相反.在从句中用过去完成时形式表示.
②与现在事实相反.在从句中用过去一般时形式表示.
③与将来事实可能相反.在从句中用过去将来时形式表示.
主句中则用情态动词would. should. could 等加一个与从句一致的动词形式.例:
⑴.If I had come her yesterday. I would have seen him.
⑵.If I were a teacher. I would be strict with my students.
⑶.If it should snow tomorrow. they couldn’t go out.
4.注意事项
①if条件句中如有were. should. had.可以省去if.并使用倒装语序.
②在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were.
收起