樓上的知識友答得已經非常清楚,
不錯rise與raise的分別就是不及物動詞(v.i.)與及物動詞(v.t.)的分別,所以
The sun rises in the east.(不用受詞)
而
She raised a hand in greeting.(用受詞)
但The price of oil is raised.就沒有錯,因為這句是被動語氣(passive voice),若寫成主動語氣(active voice),可以寫成
Someone raise the price of oil.可見raise的接受者是the price of oil.
正如,英文聖經New American Standard bible哥林多前書15章13節,就有以下說法:
But if there is no resurrection of the dead, not even Christ has been raised;
而CBC news也有一段新聞,其中也有一句
The price of furnace oil was raised by just over six cents a litre, and the price of stove oil by 3.5 cents.
http://www.cbc.ca/news/story/2007/11/08/gas-prices.html
希望幫到你!