1、用作不及物动词。如：I'm reducing.我正在节食。2、用作及物动词。如：Some fat people try to reduce their weight.有些肥胖人设法减肥。3、用作宾补动词。如：Hunger reduced him to steal.饥饿使他不得不行窃。

例句：

1、The job losses will reduce the total workforce to 7,000.

职位减少后，在职工人总数将减至7,000人。

2、He finally corrected his misstatement and offered to reduce the fee.

他终于纠正了自己的错误说法，提出要减少费用。

3、The plan is designed to reduce some of the company's mountainous debt.

该计划旨在减少公司堆积如山的债务。