1.
You must study hard by any means.
无论如何你必须努力学习。
2.
For that you must work really hard.
如果这样，你必须努力学习。
3.
You must swot up your English.
你必须努力学习英语。
4.
To fulfill your goal,you have to study.
要想实现你的目标，你必须要努力学习。
5.
You must work hard， otherwise you will not learnEnglish well.
你必须努力学习，否则就学不好英语。
6.
What you have to do is to work and study hard.
你必须做的就是努力工作和学习。
7.
It's necessary for us to study hard .
我们必须努力学习。
8.
No matter how smart or gifted you are, you need to work at it.
无论你多麽聪明或天赋异禀，你都必须努力学习。
9.
Most importantly, you must work hard to catch up.
最为重要的是,你必须努力学习,迎头赶上。
10.
If you go to college, you must study seriously and not fool around.
你若要考上大学，你就必须努力学习，不要浪费时间。
11.
I must study hard because I am a student.
我必须努力学习，因为我是个学生。
12.
You must work hard otherwise you will lose your place in the class.
你必须努力学习，否则你在班上的名次就保不住了。
13.
We must study even hard from now on .
从今以后我们必须更加努力学习。
14.
We must study harder from now on.
从今以后我们必须更努力学习。
15.
We must exert ourselves and learn, because China depends on us for her reconstruction.
中国靠我们来建设，我们必须努力学习。
16.
Pressure on the school and university students is increasing and students are pushed to hard work when they are young. Do you think it is a positive or negative developing?
学校给学生的压力比过去大了，学生们必须努力学习，你认为这是积极的还是消极的？
17.
We must therefore resolve to undertake the most difficult tasks.
因此，我们必须下决心今后要更加努力学习。
18.
We must work hard to make our mother town more ahd morebeautiful.
我们必须努力学习把家乡建设得越来越美丽。