may be后面加什么形式

　　I have some information you may be able to use.

　　我有些可能對你有用的信息。

　　Art may be used as a vehicle for propaganda.

　　藝術可以用作宣傳的工具。

　　Manufacturing processes may be affected by the functionality of the product.

　　生產過程可能要受到產品設計目的的影響。

　　There may be some minor changes to the schedule.

　　時間安排也許會有些小小的變動。

　　Unemployment may be an underlying cause of the rising crime rate.

　　失業可能是犯罪率攀升的潛在原因。