老师们好!
Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time.
句中的changes in that biomass为什么选择in做changes的定语介词呀,谢谢老师!!
介词 in 可以表示“方面”,由它构成的介词短语常用来作定语。被修饰的名词往往是打破原来状态,多有“变化”之意。诸如:“改变、差异、上升、下降、增加、减少”等。又如:
There was an astounding 20% increase in sales.
销售量惊人地增加了20%。
There has been a decrease in traffic accidents.
交通事故减少了。
The rise in oil costs reacted on the price of food.
油价上涨影响食物价格。
The figures represent a general decline in employment.
这些数字表明就业率的总体下降。
He was prepared to take a drop in wages.
他准备好了接受一次工资的快速下调。
There's no difference in the results.
结果没有差别。
There's going to be a change in the weather.
天气将有变化。
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