"我们去当地公园"可以用英文表示为 "Let's go to the local park."。
"Let's" 是 "let us" 的缩写，意思是 "让我们"，常用来邀请别人做某事。
"Go" 是动词，意思是 "去"。
"To" 是介词，意思是 "到"。
"The local park" 是名词短语，意思是 "当地公园"。
一些其他例句：
"Do you want to come with us to the local park?" (你想和我们一起去当地公园吗？)
"The weather is nice today. Let's go to the park and have a picnic." (今天天气很好。我们去公园野餐吧。)
"There are a lot of children playing in the park. Let's go and watch them." (公园里有很多小孩在玩。我们去看看他们吧。)