as if虚拟语气的用法
有时用虚拟语气，若表示与现在事实相反，谓语动词用一般过去时;若表示与过去事实相反，用过去完成时;表示将来的可能性不大，用would (might, could)+动词原形。
[1]一般过去时,过去完成时,相关知识点知识点1:过去完成时与一般过去时的区别(1) 过去完成时表示以过去某时间为起点以前所发生的动作或存在的状态，即：过去完成时强调“过去的过去”，而一般过去时只表示以现在时间为起点以前所发生的事情或存在的状态。如：He studied there two years ago. 他在那儿学习了两年。(离现在两年)He said he had studied t
档源英语学习网要特别提醒同学们，这是一个中考英语中的高频考点，同学们一定要多加注意。
它的常规用法相信同学们都很熟悉，今天小牛英语要跟大家强调两点罕见情况。
(1) 从句所表示的内容若为事实或可能为事实，也可用陈述语气：
It looks as if we'll be late. 我们似乎要迟到了。
[2]look单词记忆法◆记忆方法一：分析：loo---外形像数字 100； k---外形像机枪 记忆：我看到 100 把机枪
This meat tastes as if it has already gone bad. 这肉吃起来似乎已经坏了。
在现代英语中，有时即使从句内容不是事实，也可能用陈述语气：
I feel as if [as though] I'm floating on air. 他感到好像漂浮在空中。
The stuffed dog barked as if it is [were, was] a real one. 玩具狗叫起来像真狗。
(2) 注意 It isn't as if…的翻译：
It isn't as if he were poor. 他不像穷的样子(或他又不穷)。
[3]were单词记忆法◆记忆方法一：联想方式：We+re热我过去怕热◆记忆方法二：联想方式：We+re热记忆方法：我过去怕热
It isn't as if you were going away for good. 又不是你离开不回来了。
as相关单词意思与记忆法：
as单词意思解释释义：
ad. 同样地, 例如prep. 做为, 当作conj. 当...之时, 以...的方式, 像...一样, 因为【计】 高级系统, 先进系统, 辅助存储器, 自治系统相关词组: as contrasted with... as follows as long as as mentioned above as much as... as noted above as opposed to... as previously seen as shown in... as soon as conj. as such as the name implies as well as well as A as well as B as firm as a rock as is well known... as for... as is as...so... as yet as it is as it were as if as of... as regards... as to... as in the case with as indicated in... as it was as...as... as indicated above as a consequence as a consequence of... as a result brave as a lion as a result of... as a rule as a whole as seen from without
as单词相关例句：
If you wish to succeed , you should use persistence as your good friend , experience as your reference , prudence as your brother and hope as your sentry. (Thomas Edison , American inventor )——如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。 (美国发明家 爱迪生. T.)
An honest man's word is as good as his bond. 诚实人的话像他的契约一样靠得住。
Politics, as a pracitice, whatever its professions , has always been the systematic organization of hatreds.——Adams Henry, American historian 政治作为一种实践，不管它如何表白，始终是有条不紊的煸动仇恨的组织。美国历史学家 享利.A.
We are like wheat, here on earth to ripen. We ripen intellectually by letting in as much of the universe's complexity as we can. Morally we ripen by making our choices. And we ripen spiritually by openig our eyes to Creation's endless detail.——Richard Wolkomir, American writer我们就像小麦，生长在土地上等待着成熟。通过尽可能多吸收宇宙的复杂性使我们智力上成熟，通过各种选择使我们道德上成熟，通过睁开眼睛看到创世纪的无尽的细节使我们心灵上成熟。美国作家 沃克摹.R.
We can not tell the precise moment when friendship is founded, As in filling a vessel drop by drop, there is at last a drop which makes it run over ; so in a serics of kindness there is at last one which makes the heart run over.——James Boswell, British writer 我们无法讲出友谊缔造的确切时刻，就像一点一滴地倾注一个容器一样，终有一滴使容器满溢；因此，面对接二连三的好意，终有那么一次会动人心弦，情谊洋溢。英国作家 博斯韦尔,J.
They who cannot do as they would, must do as they can. 不能为所欲为者，也当尽力而为之。
To suppose, as we all suppose, that we could be rich and not behave as the rich behave, is like supposing that we could drink all day and keep absolute sober.——Logan Pearsall Smith, American weiter 如果以为我们变富后不会像有钱人那样行事，这无异地以为我们能终日豪饮，但又能保持头脑清醒。美国作家史密斯.L.P.
Disease, enemy, and debt --these three must be cut off as soon as they begin to grow. 病，仇与债这三者，一露苗头就砍掉。
A book is the same today as it always was and it will never change. 一本好书今天如此，将来也如此，永不改变。
Beauty, unaccompanied by virtue, is as a flower without perfume. 美而无德犹如花之无香。
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