求问英语真实条件句和非真实条件句的详细语法!顺便讲解下!
求问英语真实条件句和非真实条件句的详细语法!顺便讲解下!
真实条件句用于陈述语气,假设的情况可能发生,其中 if 是如果的意思。
真实条件句
时态关系:
(1)当主句为一般将来时,条件从句用一般现在时表示一般将来的动作。
如:We shall go out when you finish your holiday homework.
(2)当主句为过去将来时,从句用一般过去时表示过去将来的动作。
如:I would not go with you if it rained the next day.
(3)现在进行时可在时间状语从句和条件状语从句中表示将来正在进行的动作。
如:Wake me up if I am still sleeping at 7.
(4)当主句为一般将来时,由as soon as,after,before,till/untill,when,if等引出的状语从句常用现在完
成体表示将来完成的动作。
如:I will help you as soon as I have finished my homework.
非真实条件句
1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
一般过去时 should( would) +动词原形
If they were here, they would help you. 如果他们在,他们就会帮你了(事实是他们不在)
b. 表示与过去事实相反的假设。
过去完成时 should(would) have+ 过去分词
If she had worked harder, she would have sueeded. 和第一个理解起来差不多,只是一个是
和现在相反,一个是过去相反,必须要看清楚
c. 表示对将来的假想,与现在的现实相反
一般过去时 should+ 动词原形
were+ 不定式 would + 动词原形 should+ 动词原形
If you sueeded, everything would be all right.
If you should sueed, everything would be all right.
If you were to sueed, everything would be all right.
大部分取自网上,已经将重点列出来了
非真实条件句又称作虚拟语气,要想熟练操作还是需要多做题目的。
求解释非真实条件句和真实条件句的详细语法。
真是条件句 就是 可能发生的事情
非真实条件句 就是 不可能发生的
真实:if it is fine tomorrow,we shall go fishing
明天可能天晴 可能发生
非真实: if i were free,i would go 如果当时我有空 我就去了. 已经过去了 不可能发生 只是做个假设.
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真实条件句和非真实条件句的区别?
真实条件句是极有可能发生的。如:若刻苦学习,就能取得不错的成绩;若明天下雨的话,就不去春游了。
非真实条件句都是不可能发生的,是对实际情况做一个完全相反的假设。如:若我小时候努力学习了(实际上没有),我现在也不至于找不到工作;若事事都能如愿(实际上不可能),乞丐也能飞黄腾达。
真实和非真实条件句
真实条件句
真实条件句用于陈述语气,假设的情况可能发生,其中 if 是如果的意思。
时态关系
句型: 条件从句 主句
一般现在时 shall/will + 动词原形
If he es, he will bring his violin.
典型例题
The volleyball match will be put off if it ___.
A. will rain B. rains C. rained D. is rained
答案B。真实条件句主句为将来时,从句用一般现在时。
非真实(虚拟)条件句
1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a.同现在事实相反的假设。
句型 : 条件从句 主句
一般过去时 should( would) +动词原形
If they were here, they would help you.
b.表示与过去事实相反的假设。
句型: 条件从句 主句
过去完成时 should(would) have+ 过去分词
If she had worked harder, she would have sueeded.
The rice would not have been burnt if you had been more careful.
If my lawyer had been here last Saturday, he would have prevented me from
going.
If he had e yesterday, I should / would have told him about it.
含义:He did not e yesterday, so I did not tell him about it.
If he had not been ill and missed many classes, he would have made greater
progress.
含义: He was ill and missed many lessons, so he did not make greater progress.
c. 表示对将来的假想
句型: 条件从句 主句
一般过去时 should+ 动词原形
were+ 不定式 would + 动词原形
should+ 动词原形
If you sueeded, everything would be all right.
If you should sueed, everything would be all right.
If you were to sueed, everything would be all right.
非真实条件句
非真实条件句
1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
句型 : 条件从句 主句
一般过去时 should( would) +动词原形
If they were here, they would help you.
b. 表示于过去事实相反的假设。
句型: 条件从句 主句
过去完成时 should(would) have+ 过去分词
If she had worked harder, she would have sueeded.
The rice would not have been burnt if you had been more careful.
If my lawyer had been here last Saturday, he would have prevented me from going.
If he had e yesterday, I should / would have told him about it.
含义:He did not e yesterday, so I did not tell him about it.
If he had not been ill and missed many classes, he would have made greater progress.
含义: He was ill and missed many lessons, so he did not make greater progress.
c. 表示对将来的假想
句型: 条件从句 主句
一般过去时 should+ 动词原形
were+ 不定式 would + 动词原形
should+ 动词原形
If you sueeded, everything would be all right.
If you should sueed, everything would be all right.
If you were to sueed, everything would be all right.
:mryuan./ShowArticle.asp?ArticleID=55
真实条件句和非真实条件句的区别是什么?
非真实条件句是虚拟式的一种表示法。在非真实条件句中,用一般过去时表示的条件指现在或未来,而用过去完成体表示的条件则指过去。可以看出,非真实条件句发生的语境是就现在/过去事实的一种假设。e.g If you missed the bus ,you wouldn't be there on time.如果你未赶上公共汽车,你就不能按时到了。(表示你现在已经赶上公共汽车了,你可以按时到。) 而真实条件句只是对客观事实的一种陈述。
如何理解条件句和虚礼语气,什么是真实条件句和非真实条件句,怎么理解混合条件句
虚礼语气
1. 主语从句中的虚拟语气 主语从句中的虚拟语气主要取决于某些形容词和过去分词,用来表示建议、命令、要求、惊异和失望等。其形式为:(should)+ 动词原形。 常这样用的形容词有: appropriate 适当的 advisable 适当的,合理的 better 较好的 desirable 理想的 essential 精华的 imperative 迫切的 important 重要的 insistent 坚持的 natural 自然的 necessary 必要的
preferable 优越的,较好的 strange 奇怪的 urgent 紧迫的 vital 极其重要的 过去分词有: desired, demanded, ordered, requested, suggested, remended, required 等。 例如: It is essential that you (should) win the voters‘ hearts.
赢得选民的心是绝对必要的。 It was suggested that he (should) join the activities.
有人提议他应该参加俱乐部的活动。 2. 表语从句和同位语从句中的虚拟语气 在表示建议、命令、主张、目的和愿望等名词后面的表语从句和同位语从句中谓语动词要求使用虚拟语气。其形式为:(should)+ 动词原形。 常这样用的名词有: resolution 决心,决议 pray 恳求 decision 决议 motion 提议 suggestion 建议 preference 选择 proposal 提议 advice 劝告 remendation 推荐 desire 愿望 demand 要求 requirement 要求 order 命令 necessity 必要性 request 要求 idea 主意、想法 例如: He gave orders that the guests (should) be hospitably entertained.
他下令热情款待这些客人。 His proposal is that we (should) get rid of the bad habits.
他提议我们应该摈弃这些不良习性。
……
If真实条件句与非真实条件句的用法(请仔细解释非真实的两种不同用法,谢=w=)
非真实条件句(我说成是虚拟语气)分别分成对过去,现在,将来的虚拟
条件从句 主句
过去 had +过去分词 would(should)+过去分词
现在 过去式(be用were) would(should)+动词原形
将来 过去式/should /were to+动词原形 同上
这个表格记住就明白虚拟语气怎么使用了,虚拟语气顾名思义是不可能发生的
比如If I were you,I ......我不可能是你所以用了对现在的虚拟
而真实句式表示有可能发生的,比如If he es home,please call me at once.
大概就是这些,如果还有不懂,可以问我
如何判断if I had you是真实条件句还是非真实条件句?
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答:从形式和意义两方面去判断。
一、形式
虚拟条件句中的谓语动词必定是过去时态。主句必定是would+ do / have done 形式。(would根据人称和意思,可改用should (第一人称),和could (能),might(可能))
具体:
if从句 主句
与现在情况相反的假设: did would +V.
与过去情况相反的假设: had done whould have done
与将来情况很可能相反的假设: did/ were to+V. / should +V. would +V.
注:be动词用律用were
二、从意义上去判断。
象If I were you, I would do sth. 很明显是假设的,因为我怎么可能是你呢?
主要还是要从形式上去判断。
如有人说:如果我有10万元,我就买一辆新车。这是很难判断这是虚拟语气的句子,还是真实的条件句。但是:
If I have 10,000 yuan, I will buy a new car. 这就是陈述语气。
而:If I had 10,000 yun, I would buy a new car. 就明显是虚拟语气。
翻译过来是如果我有你,显然就是目前为止还没有咯,判定为非真实条件句。
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