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means是可数名词意为“方法”、“手段”、“收入”、“财富”，需要注意的一点是means是单复同形词。有by all means（可以；当然行；没问题），by no means（绝不；一点也不）等用法。
means作可数名词用法
means of doing sth./of sth.方式；方法；途径
（1）Television is an effective means of communication.
电视是一种有效的通信手段。
（2）Is there any means of contacting him?
有没有什么办法和他取得联系？
（3）Have you any means of identification ?
你有没有任何身份证件？
（4）We needed to get to London but we had no means of transport.
我们需要赶往伦敦，但却没有任何交通工具。
means作名词复数讲意为“财富”、“钱财”
（1）People should pay according to their means.
人们应该按照各自的负担能力来消费。
（2）He doesn't have the means to support a wife and child.
他无钱养活妻小。
（3）Private school fees are beyond the means of most people (= more than they can afford).
私立学校的费用是大多数人无力支付的。
（4）Are the monthly repayments within your means (= can you afford them)?
这样按月还钱，你能承受得了吗？
（5）Try to live within your means (= not spend more money than you have).
要尽可能量入为出。
（6）a man of means (= a rich man)
有钱人
常用短语
（1）by all means可以；当然行；没问题
-Do you mind if I have a look? -By all means.
-我看一眼行吗？-当然可以。
（2）by means of sth.借助……手段；依靠……方法
The load was lifted by means of a crane.
重物是用起重机吊起来的。
（3）by no means | not by any (manner of) means绝不；一点也不
She is by no means an inexperienced teacher.
她绝不是个毫无经验的教师。
（4）a means to an end（本身并不重要或有趣的）达到目的的手段
He doesn't particularly like the work but he sees it as a means to an end.
他不怎么喜欢这项工作，只是把它看作达到目的的手段而已。