12. LACE>AlaskaLACE> regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves.

(A) fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves

(B) fund, the intention of which is to sustain the state’s economy after they have exhausted their oil reserves

(C) fund intended to sustain the state’s economy after oil reserves are exhausted

(D) fund intended to sustain the state’s economy after exhausting its oil reserves（C）

(E) fund that they intend to sustain the state’s economy after oil reserves are exhausted

请问intended to...这个过去分词短语在句中是什么成分和什么功能？这个句子是sb do sth done sth的结构，我对这种结构没什么认识，请牛牛们指点，先谢过了。

楼主，这不是什么结构。原句 =

Alaska deposists profits from sales of oil to a special fund.

The fund is intended to sustain the state's economy.

intended to ... 是过去分词做定语，修饰fund.