1.Keep off the grass.
禁止踏草地。收藏指正
2.Please keep off the grass.
不要践踏草地。收藏指正
3.Keep off the grass， please!
请勿践踏草坪!收藏指正
4.He told the boys playing football to keep off the grass.
他告诉那些踢足球的孩子们不要践踏草坪。收藏指正
5.Keep off the lawn [grass].
请勿践踏草地。收藏指正
6.The notice said Keep off (ie Do not walk on) the grass
布告牌上写著｀勿踏草地＇.收藏指正