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企业软件开发多少钱 if用法详解(三) if的不详&倒装
发布日期：2024-11-03 06:03 点击次数：114
if用法详解(三) if的不详&倒装
if-型不详结构及不详if而引起的倒装舒畅在中学英语讲义中每每出现，况兼亦然高考一个十分首要的考点，本文拟对其可能波及的结构作一全面归纳。
I不详if倒装
当虚构语气在非实在条目句使用时，if可以不详，从而引起倒装，即把were，had，should提前，以强调假定条目的虚构性或隆起言语东谈主的主不雅愿望。
(1)暗示与现在事实相悖的情况
If I were you, I would never take Shelly somewhere dangerous.
Were I you, I would never take Shelly somewhere dangerous.
如果我是你，我永久不会带雪莉去这样危机的方位。
(2)暗示与夙昔事实相悖的情况
If Shelly had worked out 23 hours a day, she wouldn't have got constipated.
Had Shelly worked out 23 hours a day, she wouldn't have got constipated.
如果雪莉之前每天检会23个小时，她就不会便秘了。
(3)暗示与来日事实相悖
If Shelly were to stay on Salmon Planet, cheaper treatment couldn't be worked out.
Were Shelly to stay on Salmon Planet, cheaper treatment couldn't be worked out.
如果雪莉要待在鲑鱼星球，她就找不到低廉的诊治顺序。
II if从句中的不详
(1)if + 形色词
这类结构粗俗可视为在if与形色词之间不详了主语+动词be。
Send the goods now if (they are ready).
货品如已备好，请即送来。
If (it is) true, this will cause us a lot of trouble.
这事如若事实，它将给咱们形成好多繁重。
If necessary, ring me at home.
如果必要，可往我家里打电话。
If possible, let me know beforehand.
如果可能，可在事先奉告我。
If (it is) convenient, do come to attend our party in Hilton Restaurant tomorrow．
如果便捷的话，来日一定要来插足咱们在希尔顿饭馆的约聚。
(2)if + 夙昔分词
其中夙昔分词可视为是被不详的被迫结构，即在if与形色词之间不详了主语+动词be
He will come if (he is) asked.
他受邀就会来。
The medicine is quite effective if (it is) taken in time.
这药要是能如期服用，服从是很好的。
(3)if + 代词
小程序开发这类不详粗俗要证据具体的荆棘文来一语气。
①if (there is) anything
a.如有什么不同的话（之前多已说起相悖的情况）;
I haven't made much of this—if anything, I've played it down.
对此我并莫得加以爱重——要说有什么永别的话，那我是看淡它了。
b.若要说的话；
He seems to have little, if anything, to do with this.
若要说他和这事有什么干系的话，那也似乎是很少的。
c.以致正相悖
He is not diligent,if anything, he is clever.
他不劳苦，正相悖，他很忠良。
②if any暗示数目：如果有(一些)
There are few people nowadays, if (there are)any (people), who remember him.
咫尺难忘他的东谈主，如有的话，也未几了。
(4)if + 介词短语
这类结构往往要证据具体的语境来一语气。
①if in doubt如果有疑问
If(you are) in doubt, ask your doctor. He can give you further information.
你若有疑问，可以问问大夫. 他会向你作进一步的阐明。
②if at all即使...也；要是...就
Their policies have changed little, if at all, since the last election.
自前次选举以来，他们的计谋就算是有变化，也变得很少。
Drink in moderation, if at all.
要是喝酒，就适量喝。
③if at all possible尽可能
Work at home if at all possible.=Work at home if it is possible at all.
如果可能的话，尽量在家办公。
④if by any chance万一
If by any chance you can’t manage dinner tonight, perhaps we can at least have a drink together.
就算你今晚不吃晚饭，也许咱们至少可以通盘喝一杯。
注：以上if不详结构中，不详的主语可以是there、it、以及与从句一致的主语；如主从句主语不一致或从句中缺少be动词，则不行不详。
If an eyewitness to the accident is brought in, you are sure to be proved innocent.
如果有一个目睹事故的证东谈主在场，你详情会被阐明是无辜的。
If the host invites the superstar, he would be glad to show up at the celebration.
如果主捏东谈主邀请那位超等巨星，他会很怡悦出席庆祝活动的。
(5)if ever
if ever 可视为习语，它粗俗与seldom连用，具有斟酌意味，暗示“少许”“艰苦”，“险些”“即使...也”
She seldom, if ever, goes to the cinema.
她艰苦看电影。
He seldom if ever travels abroad.
他到海外旅行，即使有过，亦然少许的。
The island is seldom if ever visited by ships.
这个岛艰苦有船停泊。
If ever you’re in Cambridge, do give me a ring.
万一你来剑桥，一定要给我打电话。
(6)if not
if not 可视为一个斟酌的条目状语从句不详,“如果不是(那样)的话”
I might see you tomorrow. If not, then it’ll be Saturday.
我可能来日去看你。如果不是来日，那就在周六。
Ask her if it is a convenient time. If not, can she suggest another possible time?
问问她阿谁时代便捷不便捷。要是不便捷，那她可不可以薄情一个可行的时代?
If not today, tomorrow I’m sure you’ll get an answer.
如果今天得不到答信，来日准能获取。
if not 还可后接暗示平等相比的不详要素：
This is one of the oldest buildings in town, if not the oldest.
这是城里最陈腐的房屋之一，如果不是最陈腐的话。
Usually, if not always, we write “cannot” as one word.
咱们即使不老是如斯，也粗俗是把cannot看成一个词来拼写的。
That alligator would be every bit of 11 foot, if not a little bit bigger.
那只鳄鱼其实体量可以。就算莫得更大，也基本有11英尺了。
Much emphasis is put on how to spend as much time if not more studying by themselves as being taught.
如果没花更多的时代我方学习，东谈主们会把要点放在怎样耗尽尽可能多的去袭取率领。
His pronunciation, if not good, is at least tolerable.
他的发音如果说不算好，也还过得去。
We all know that, if not carefully dealt with the situation will get worse.
咱们王人知谈，如果不留心处理的话，情况会变得更糟。
Though he started late, Mr. Guo played the piano as well as, if not better than, Miss Liu.
固然他弹钢琴运转得晚，软件开发资讯但郭先生如果好不外，也弹得跟刘姑娘相同好。
(7)if not more than
暗示相比对象在进度上接近或一致：至少也；即使...也
In that business，he earned as much as，if not more than，$40000.
在这个行业，他赚的钱起码有4万好意思元。
Jim plays football as well as，if not better than，Mike.
吉姆踢足球如果不是比迈克踢得更好，至少亦然相同好。
Her pronunciation is as good as，if not better than，her teacher's.
她的发音和她的真诚相同好，以致更好。
This bridge is as strong as，if not stronger than，that one.
这座桥即使莫得比那座更坚固，也相同坚固。
He has been to Guilin as many as，if not more than，ten times.
他去过桂林不下十次。
(8)if so
与if not意义相悖：如果(情况是)那样的话
I may be free this evening. If so, I’ll come round and see you.
今晚我可能有空。要是有空我会过来看你。
作为80后的主教练，杨林的执教时间不算长，但足够精彩。带队从中冠冲中乙、中乙保级、中乙冲中甲、中甲保级，从生存到进阶，每一次他拿到的都是最有挑战的任务单，而且其他新派教练都是在名帅外教身边做助理教练后才上位，杨林几乎没有过渡，他始终在自我摸索。
They must decide if such a plan can be implemented and if so, when.
他必须决定这样的研究是否能引申，况兼要是能引申的话，又得决定何时引申。
He may be busy. If so, I’ll call later. If not, can I see him now?
他可能忙，这样的话，我以后再来拜谒。他如不忙，我现在可以见他吗?
Will you be staying another night? If so, we can give you a better room. If not, could you be out of your room by 12:00?
您要再往一晚吗? 如果是这样，咱们可以给您提供条目更好一丝的房间。如果不是， 您能在12点前离开这房间吗?
(9)if need be
if need be为习语，其含义颠倒于if (it is) necessary如果有必要的话：
I will come if need be.
如有必要我会来。
I’ll work at night if need be.
如果有必要我可以晚上使命。
If need be we can always bring another car.
如果有必要的话咱们还可以再开一辆车来。
Disputes are rare and would, if need be, have to be resolved in the courts.
纠纷很少发生，如果有必要，必须通过法庭处置。
(10)if and only if
强调充分必要条目: 当且仅当
Witches are real if and only if there are criteria for identifying witches.
当且仅当有范例识别女巫，女巫才是实在存在的。
(11)if and when
固定习用语,可以看作是一个单元:如果，万一
If and when the film gets the green light, be sure you've read the book first.
万一电影获取许可，千万保证你仍是读过那本书了。
If and when we ever meet again I hope he remembers what I did for him.
如果咱们再碰面，我但愿他难无私为他作念了什么。
(12)if I were you
薄情建议或劝告: 换作是我
I would go to see him if I were you./ Were I you, I would go to see him.
换作是我，我会去见他。
(13)if only
①if only + to do sth.略含靡烂语气：即使只为了
Willy would have to tell George more, if only to stop him pestering.
即使只为了艰涩乔治触怒别东谈主，威利也会告诉他更多的。
②if only+ 条目从句 抒发关于现在、夙昔或来日的缺憾、愿望或起火：要是…就好了
If only I were as clever as you!(You’ve solved all the riddles.)
我要是能像你相同忠良该多好啊！
If only I had listened to you.(It’s too late now.)
如果我听你了的话就好了。
If only he would call.
只须他打回电话就好！
相比：only if增强主句语势：独一...才
I could buy the house only if a mortgage for 2000 dollars is available.
独一拿到2000好意思元的典质贷款，我智商买得起阿谁屋子。
Only if presented in this way can your idea get over to the audience.
独一用这样的神态薄情来，你的意义智商让听众显然。
(14)no ifs or buts
别找借口；别还价还价；没得筹商
There’s no ifs or buts you have to be finished on a date.
莫得任何借口可言，在规定的日子，你必须完成使命。
no ifs or buts---- just do as I tell you!
莫得任何意义跟借口，照我说的去作念！
(15)make as if to do something
假装作念某事；似乎要
I didn’t get up, but only because you made as if to answer the door.
我莫得站起来，仅仅因为你假装要开门。
Mary made as if to protest, then hesitated.
玛丽似乎要抗议，又徜徉了。
He made as it to resume their embrace, but Polly raised a hand to stop him.
他思从头拥抱他们企业软件开发多少钱，但波莉举起一只手艰涩了他。
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