我不得不努力学习 I had to work hard ; I had to study hard
以前我不得不学习 Previously I had to learn ; I had to learn before
不我得学习
No, I have to study
以上为机器翻译结果，长、整句建议使用 人工翻译 。
应用推荐
模块上移
模块下移
不移动