用作定语
▲～+n.
We gave up the house because of economic considerations.出于经济上的考虑,我们放弃了这栋房屋。
Cotton is the economic plants of this region.棉花是这个地区的经济作物。
The country was in a bad economic state.那个国家的经济状况恶化了。
用作表语
▲S+be+～
The airline says this route is no longer economic, so they're going to discontinue it.航空公司说这条航线不再赚钱,因此他们准备关闭。
用作宾语补足语
▲S+V+O+～
There was uranium in sufficient quantity to make mining economic.铀的矿藏量丰富,值得进行开采。

economic, economical, economy, financial
这四个词都可以表示“经济的”。economic除指“经济的”(即与国计民生有关的)外,还表示“经济上有收益的,有利可图的”; economical指“节约的,精打细算的”; financial指“财政的,财务的,财力的”;economy作形容词用在名词前面,构成名词短语,其含意相当于economical。

［同义词］   business, cheap, economical
［反义词］   expensive, uneconomic
［词源］＜希腊语oikonomia(经济)