一句英语翻译needn't be the doctor 怎么改

needn't be a doctor 不需要成为一个医生。(把the改为a)
1.need 可作动词，常用 need to do/don't need to do 的结构。
2.need 可作情态动词，常用于否定句中， 用needn't do 的结构。例如;
'You needn't have said that,' my wife answered.
`你其实用不着说这话,'我妻子回答道。

3. the doctor 中the 表示特指。
a doctor 中 ,用 a 表示类别。

要翻译还是改错啊？
翻译是，不需要成为一个医生~
改错的话，我觉得也没错，need也可以做情态动词的吗。。
实意动词么 加 to do

needn't to be doctor

don't have need to be a doctor

don't need to be the doctor