in the playground 还是on the playground?

in the playground 还是on the playground? 请问是on the playground还是in the playground in the playground 还是on the playgrand on the playground in the playground 是on the playground 还是 in the palyground 请问：在操场上 英文 是 on the playground 还是 in the playground 为什么? 在操场上用英语说是on the playground,还是in the playground这个? 在操场上的英文是On the playground.还是In the playground. we play in the playground.对in the playground提问 in the playground 英文意思 学校里有个操场.there is a playground in the school.还是there is a playground at school.哪个对? in the playground 和on the playground 有什么区别? “We will grow grass in the playground.”这句话grass前面用much还是用some?“We will grow much grass in the playground.”这句话对,还是“We will grow some grass in the playground.”这句话对? It is a wonderful place to live还是It is a wonderful place to live in?是in the newspaper还是on the newspaper是in the magazine还是on the magazine是in the playground还是on the playground 小学英语书上He is in the playground小学英语阅读书上We often kick the ball on the playground到底用in 还是on look at the students( )games in the playground now.是用 are playing 还是playing go cross a playground还是go through the playground they play the basketball in the playground.