请问下面的几个英语句子都什么意思啊?谢谢!

1.I was previewing what the teacher had assigned.
我在复习老师指定的东西。
2.What happened next was moving and unforgettable.
接下来发生的事情是感人和难忘的
3.I believe that I should return his great love with my achievements.
我想我应该用我的成绩来回报他伟大的爱。
4,I will study hard to become an eligible talent.
我要努力学习成为一个合格的人才。
5, The enlightenment he gave me will always encourage me in my whole life.
他所给我的启迪会在我的一生中一直激励我。
6. Some people who help their criminal friends cover the fact or escape from being punished will receive well-deserved punishment.
那些为他们犯罪的朋友掩盖事实或者逃脱惩罚的人们会受到他们罪有应得的惩罚。