Over half the population of this country participate in sport.

　　這個國家一半以上的人口參加體育鍛煉。

　　This autumn, 6000 residents will participate in the first phase of the project.

　　今年秋天，將有6000名居民參加該項目的第一階段。

　　The US was ready to train its troops to participate.

　　美國準備訓(xùn)練軍隊參加。

　　Each child had participated in extracurricular activities at school.

　　每個孩子都參加了學(xué)校的課外活動。