effort 什么时候加 s 什么时候不加?
2个回答

effort

[5efEt]

n.

努力

He lifted up the rock without effort.

他毫不费力地举起石头.

Please put more effort into your school work.

请你在功课上再努点力.

The directors' efforts to improve the comprehensive management in the company have been very effective.

董事们为改进公司的全面管理作出的努力是卓有成效的.

尽力

He made an effort to climb the wall.

他尽力爬上墙.

成果

Finishing the work in one day was a good effort.

一天内完成这项工作是很大的成绩.