expand的过去式是什么?expand的用法和例句

expand有扩大;发展;详细阐明;等意思，那么你知道expand的过去式是什么吗?今天一起来学习一下expand的过去式以及expand的用法和例句，希望对大家的学习有所帮助!

expand的过去式及其它时态

expand的过去式:expanded

expand过去分词:expanded

expand现在分词:expanding

expand第三人称单数:expands

expand的用法和例句

1、Your prosperity can expand America's prosperity.

你们的繁荣能够扩大美国的繁荣.

2、I owned a bookshop and desired to expand the business.

我拥有一家书店，想要扩大业务。

3、When gases are heated, they expand.

气体受热会膨胀.

4、metals expand when they are heated.

金属受了热就会膨胀.

5、Plans to expand the ATC and CCTV systems to other new towns are continuing.

至于把区域交通控制系统和闭路电视摄影机系统扩展至其他新巿镇的计划,也会继续进行.

6、The president used today's speech to expand on remarks he made last month.

总统利用今天的演讲更充分地阐述了他上个月所讲的话。

7、Substances have no tendency to expand unless ( they are ) heated.

除非 受热,物质不会有膨胀的倾向.

8、Health officials are proposing to expand their services by organising counselling.

卫生官员计划通过组织咨询来扩展他们的服务。

9、The petals of many flowers expand in the sunshine.

许多花瓣在阳光下开放.

10、Because the company was doing more business it was necessary to expand the factory.

由于公司业务的扩大,扩大工厂是必然的.