英语:单词assure,ensure,insure及assurance的区别

英语单词assure,ensure,insure及assurance都有“保证”的意思,但用法不同,几个单词的区别如下文所述:
1, Assure
如果我们要让某人相信某事是真实的或者将要发生的,我们会说“我向你保证…”, 这种情形在英语中通常用I can assure you或者类似let me assure you的结构来表达:
  • She hastened to assure me that the report contained no critical comment on my department’s performance.
  • Let me assure you / I can assure you that the children will be totally safe on this adventure holiday. No risks of any kind will be taken.
2,Ensure
单词ensure和assure的区别非常微妙,如果我们ensure某事发生,就意味着我们“确信”、“确保”此事会发生,正如之前文章“Assure, Ensure和Insure的区别”中所述。另外,在口语中我们经常用make sure来代替ensure: 
  • Ensure / Make sure that your working hours as well as your rate of pay are written into your contract.
  • I tried to ensure that everybody wore their life jackets the whole time that we were on the sailing boats, but not everybody carried out my instruction.
在美语中,ensure有时会拼写成insure:
  • I shall try to insure that you have a nice time while you are here.
3, 但是,Insure还有“保险”意思,通过保险或其它财产的手段来担保某事,一般用在保险方面。
  • We can insure your car against fire, theft and third party damage for as little as £30 per month.~
  • Make sure you remember to insure the digital camera and the mobile phones. They’re not included under the house contents insurance.
4, Assurance
Assurance和assure意思相同,只不过是名词。
  • He sought an assurance from me that i’d always be available on Saturdays to undertake the work.
  • I was unable to give her any assurance that Beth would arrive in time for the family re-union.
另外,在英式英语中,通常用life assurance可以代替life insurance,这两种说法都没有问题:
  • As we came down that hill, I thought we were going to die and I started thinking about my life insurance / life assurance policies.
  • Insurance is the term used to describe all other types of insurance:
  • That car is not insured. The insurance expired at the end of July and you haven’t renewed it.

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