if是什么意思优质

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。

详细内容

• 01

  if
  英 [ɪf] 美 [ɪf]
  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

  
• 02

  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。

  
• 03

  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。