我不得加入你们，因为我得先完成作业的翻译：I shall not join you, because I have to finish the job 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I shall join you, because I had to finish the job

I shall not join you, because I have to finish the job

I do not have to join you, because I complete the work first

I may not join you because I had to finish the job

I shall not join you, because I have to finish the job