雅思写作很多时候都会讨论到购物和金钱的话题，那么这两个话题中有哪些会频繁使用的短语和句型呢？     disposable income 可支配收入
例句
Since they don't have any children and their rent is very cheap, they've a lot of disposable income.由于他们没有孩子而且房租也非常便宜，所以他们手头可支配的收入相当宽裕。

常用的联想短语或句型
>> conspicuous consumption
=buying expensive things to show people how rich someone is
大手大脚的消费
例句
Many people believe that conspicuous consumption is an antisocial behaviour.
很多人认为大手大脚的消费是一种对社会有害的行为。

>> levy a tax on...
= officially request payment of a tax
(政府)对......征税
例句
A new tax has been levied an cigarettes.
政府开始征收一项新的香烟税。

be economical
经济实用的，节省开支的
例句
A small family car is more economical than a large car.
一辆小的家用汽车比大型汽车要经济些。

常见的近义短语或句型
>> be cost-effective
=be economical in terms of the services received for the money spent
物有所值的
例句
We need a cost-effective solution to the problem.
我们需要找出一个能解决这个问题的高性价比解决方案。

>> be penny-wise and pound-foolish
= be extremely careful about small amounts of money but not careful enough about larger amounts
贪图小利吃大亏
例句
These education budget cuts are really penny-wise and pound-foolish.
这份削减教育预算的决议实在是贪小便宜吃大亏。

a source of income 收入来源
例句
Edward does not have any other source of income apart from his job
除了他的工作，爱德华没有其他的收入来源了。

常用联想短语或句型
>> scrimp and save to do sth.
=spend very little money because you want to save it to buy sth. expensive
(为了将来进行某种很高的消费而) 省吃俭用
例句
They had to scrimp and save to pay for the holiday.
他们为了假期省吃俭用。

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