He is studying hard these days.
这些天他学习很努力。
He is very tired, even so he keeps studying English hard.
他非常累了，尽管如此他还是继续刻苦学英语。
He is ever awake to the necessity of studying hard.
他始终明白努力学习的必要性。
He is studying hard to catch up with his classmates.
他正努力学习以赶上其他同学。
Maria is studying Chinese as hard as she can.
玛丽亚正在尽量努力学汉语。
She is studying hard for fear that she should lag behind others.
她学习很刻苦，唯恐落在别人后面。
He is studying very hard so that he can enter a key high middle school.
他正努力学习，为了能够上一所重点高中。
My English is not very well, but I am always studying English hard.
我的英文不是很流畅，但我正在努力地学习英语。
He is studying hard and is going to try for the exams.
他正努力学习，准备参加考试。不能用。
Is studying English hard work for you? Why or why not?
学英语对你来说是件困难的事情么？为什么？
Studying hard, is also a responsibility for our motherland.
读好书，也是对祖国负责。
Studying hard is very good act, but I want to watch TV now !
努力学习是很好的行为，但我现在想看电视！
Studying hard is the responsibility for our parents.
读好书，是对父母负责。
约翰正在努力学习。
Studying English, from my point of view, is not a hard work.
从我的观点来看，学英语不是一个很难的事情。
Studying/Working hard is also necessary.
努力学习也很必要。
学习勤奋是我的职责。
He is studying hard for the coming test.
为了即将到来的考试他正努力学习。
When he is studying hard at home, I'm watching TV.
当他在家刻苦学习，我正在看电视。
Tom is studying hard at school, don't worry about him.
TOM在学校努力学习，别为他担心。
We are studying hard in our school, our life is happy and interesting.
我们学习刻苦，生活愉快而有趣。
Why is studying English so hard?
为什么学英语这么困难？
Is good at studying diligently the hard problem;
善于钻研疑难问题；
Is good at studying diligently the hard problem;
善于钻研疑难问题；
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