1、九的英语单词是：Nine，英：[naɪn]；美：[naɪn]。

2、We still sighted nine yachts.我们仍然看到有九艘游艇。

3、The judges awarded her three nines and an eight.评委给她打了三个9分，一个8分。

4、Shell be nine in April.她到四月份就九岁了。

5、Her daughters were aged nine and five.她的女儿一个九岁，一个五岁。