1-30的英文单词可以按以下顺序替换：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh, twenty-eighth, twenty-ninth, thirty.
例如：
原句：I have four apples.
改写后：I have 4 apples.
原句：There are thirteen students in the classroom.
改写后：There are 13 students in the classroom.
原句：She is twenty-five years old.
改写后：She is 25 years old.
注意：为了使改写后的内容和原文相似度不超过20%，还需要对句子结构、表达方式等进行适当修改。
