IF，英语辞彙，基本释义为如果、即使、是否。
基本介绍
- 中文名：如果
- 外文名：if
- 发音： [ɪf]
单词资料
发音
英 [ɪf] 美 [ɪf]
释义
- conj. （表条件）如果；即使；是否；（表假设）假如
1. (表示条件)如果
He will come if you invite him.
如果你请他,他会来的。
2. (表示虚拟)假如,要是
If I were you, I would never do that.
如果我是你,我决不做那件事。
3. (表示让步)即使
We'll go even if it rains.
即使下雨我们也要去。
4. 是否
I wonder if she is ill.
不知她是否病了。
5. (表示因果关係)每一次...的时候(总是会)
If I feel any doubt, I inquire.
我一感到有疑问就随时询问。
- n. 条件；构想
There are too many ifs in his offer.
他的提议中条件太多了。
缩写
IF=i.f.
if.
缩写词 abbr.
1. =information feedback 信息回馈
2. =interferon
3. =intermediate frequency 中频
i.f.
缩写词 abbr.
=intermediate frequency 中频
扩展知识
1. 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。
He wants to know if/whether you can help him.
She wonders whether you'll go or not.
2. if可引起条件状语从句，whether不用于状语从句。
If you work hard, you'll succeed.
If I were you , I would do it in another way.
3. whether可引起主语从句，表语从句，if不能用于这两种情况。
Whether you can finish it in time or not depends on yourself.
The question is whether they'll help you.
4. if在名词性从句中只能引导动词后的宾语，whether可通用。
