下面两句都可以表示您的这个问题：
英文原文：
I went shopping with my classmates today.(已经买完)
I will go shopping with my classmate today.(早上准备去买)
英式音标：
[aɪ] [went] [ˈʃɒpɪŋ] [wɪð] [maɪ] [kˈlɑːsmeɪts] [təˈdeɪ] .
[aɪ] [wɪl] [gəʊ] [ˈʃɒpɪŋ] [wɪð] [maɪ] [ˈklɑːsmeɪt] [təˈdeɪ] .
美式音标：
[aɪ] [wɛnt] [ˈʃɑpɪŋ] [wɪð] [maɪ] [kˈlɑːsmeɪts] [təˈde] .
[aɪ] [wɪl] [go] [ˈʃɑpɪŋ] [wɪð] [maɪ] [ˈklæsmet] [təˈde] .