if是什么意思 if是什么意思中文
大家好今天来介绍if是什么意思(if是什么意思中文)的问题，以下是小编对此问题的归纳整理，来看看吧。
文章目录列表:
if是什么意思
if是假设的意思。if是英语单词，在英文中，if和whether在宾语从句中，都表“是否”，可换用，if更口语化，whether正式些。
当有or not时，一般用whether，而不用if。if在名词性从句中只能引导动词后的宾语。if可引起条件状语从句，whether不用于状语从句。
if的用法。
1、if作为从属连词，可引导条件状语从句、让步状语从句和名词从句。
2、if引导条件状语从句，从句可为真实条件从句，也可为虚拟条件从句。如为真实条件从句，谓语用陈述语气，表示可能性很大，作“假使”“如果”解，通常用一般现在时代替一般将来时；如果if从句中用will，表示意愿。
if是什么意思
if的意思：是否；如果；即使；每当；条件；设想。
1、发音：英[?f]；美[?f]
2、例句：Do you know if he's married?
3、翻译：他结婚没结婚，你知道吗？
4、短语：if possible 如有可能
近义词：whether
1、意思：是否；不管；无论
2、发音：英['we??(r)]；美['we??r]
3、用法：
whether用作连词,意思是“是否，是不是”，可引导名词从句或动词不定式短语。whether还可引导让步状语从句，意思是“不管，无论”，从句中通常用一般现代时代替将来时。
if是什么意思
if仅由两个字母组成，是一个看上去很简单的单词，但是实际它的意思和用法都是很多的，那么接下来就来跟大家说一说if究竟包含有哪些意思。
简要回答
if是一个英语单词，既可以作名词又可以作连词，作名词意为不确定的情况，作连词意为如果、假若、倘若、当、无论何时、每次，与will或would连用，表示客气地请求。
详细内容
if
英 [?f] 美 [?f]
conj.如果;假若;倘若;当;无论何时;每次;与will或would连用，表示客气地请求
n.不确定的情况
复数： ifs
语法说明
【if】【whether】
Both if and whether are used in reporting questions which expect ‘yes’ or ‘no’ as the answer if和whether均用于要求以yes或no作答的转述疑问句中：
She asked if/whether I wanted a drink.
她问我要不要喝点什么。
although whether sounds more natural with particular verbs such as discuss , consider and decide . When a choice is offered between alternatives if or whether can be used. 不过whether与discuss、consider和decide等动词连用听起来更自然。提供选择时用if或whether均可：
We didn’t know if/whether we should write or phone.
我们不知道是写信好还是打电话好。
In this last type of sentence, whether is usually considered more formal and more suitable for written English. 在最后这一句型中，一般认为whether较正式，更适用于书面英语。
双语例句
She gets very upset if I exclude her from anything
要是有什么事情我不让她参加，她会非常难过。
He asked if I had left with you, and I said no
他问我是否和你一块儿离开的，我说不是。
Sometimes, that standard is quite difficult, if not impossible, to achieve
有时即便有可能达到那个标准，那也是非常困难。
If I could just make another small point about the weightlifters in the Olympics
请允许我就有关奥运会举重运动员的问题再补充一点。
I wonder if you'd be kind enough to give us some information, please?
请问您能不能给我们提供一些信息？
If there was any disappointment it was probably temporary
即便有点儿失望，也肯定是暂时的。
if什么意思
if (表示虚拟)假如,要是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 succeeded.
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 come yesterday,I should / would have told him about it.
含义：He did not come 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 succeeded,everything would be all right.
If you should succeed,everything would be all right.
If you were to succeed,everything would be all right.
if是什么意思
if英 [?f] 美 [?f]conj.即使; 如果，倘若; 〈口〉是否; 假设;
n.条件，设想;
[网络]如果; 中频; 条件;
[例句]She gets very upset if I exclude her from anything.
要是有什么事情我不让她参加，她会非常难过。
[其他]复数：ifs
以上就是小编对于if是什么意思 if是什么意思中文问题和相关问题的解答了，希望对你有用