Part one(主语) provides(谓语动词) an introduction and background to the area(宾语).
The preparation and accuracy of any type of cost estimate(主语) will depend
heavily on(谓语,其中插于状语heavily) the amount of information(宾语) available(后置定语,修饰宾语) and tools(宾语) used during different project phases(过去分词短语,做后置定语,修饰宾语)