1.3的英文是three。
2.音标:英 [θriː] 美 [θri]
3.Three years ago he clerked in a bank. 三年前他在一家银行里当职员。
4.She ticked off three items on the list. 她用记号标出表格上的三个项目。
5.I had only danced with Mary about three minutes when someone cut in. 我和玛丽刚刚跳了大约三分钟的舞,就有人来截舞。