The cause of higher prices was an increase indemand.
译文:价格上升的原因在于需求的增加。
点睛:本句中包含的句型为the cause of...is/was…,用来揭示某一事实或现象的原因。可以直接将the cause of后面的名词或名词性短语及be动词后的宾语替换掉,也可以将cause替换为reason。但是,在将cause替换为reason时,应该注意与二者搭配的介词不同:与cause搭配的介词应是of, 而与reason搭配的介词应是for。
句型拓展:
*The reason prices went higher was that there was an increase in demand.
价格上升的原因在于需求的增加。
*The reason for higher prices was an increase in demand.
价格上升的原因在于需求的增加。
*The higher prices are caused by the increase in demand.
价格上升是由需求的增加所引起的。
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