I have to study this, don't I?
我必须研究这个，是不是？
I did OK, but I have to study a lot.
我还行，但是我得好好学习。
Do I have to study for the test?
我必须学习以准备考试吗？
我要在周末的研究。
我每晚都得挑灯夜战了。
我必须得学习，准备考试。
But now, I have to study and use it.
但现在，我不得不去学习和使用它。
So I have to study with all energies.
所以我必须用全部的精力来学习。
I have to study English three years ago.
我三年前开始学英语。
I have to study very late to pass the test.
我为了通过考试，不得不学习到很晚。
I have to study something about mechanics.
我要学一点力学方面的东西。
I'm sorry. I have to study for a math test.
对不起，我得学习准备数学测试。
I'm afraid so. I have to study for an exam.
恐怕是的。我得准备一个考试。
I have to study for my college entrance exams.
我得为我的大学入学考试复习。
I have to study hard to recover the lost time.
我一定要努力学习来补上失去的时间。
I know I have to study and work very hard here.
我知道要学习和辛勤工作在这里。
I have to study for the chemistry test on Sunday.
我周日不得不为化学考试学习。
From now on I have to study hard to achieve my dream.
从现在开始我必须努力学习来实现我的梦想。
Before reading a new text, I have to study new words.
我读一个课文之前，我以该认识生词。
I have to study harder to keep up with my classmates.
为了跟上同学，我必须更努力一点。
I have to study too much so I don't get enough sleep.
我要学的太多，因此我睡眠不足。
Sorry, I can't. I have to study for a test. I'm sorry.
很抱歉，我不能。我有一个考试要学习功课。非常抱歉。
And I have to study for my chemistry test on Thursday.
星期四我得学习，准备化学考试。
I love to, but I have to study for a test tomorrow night.
我很乐意，但是明晚我有个测试，我必须学习。
I want to watch a movie every night but I have to study?
我想每晚都看电影，但我必须得学习。
I want to watch a movie every night but I have to study...
我想每晚都看电影，但我必须得学习。
I have to study until midnight, so I don't get enough sleep.
我不得不学到半夜，因而睡眠不足。
I can't now. I have an exam tomorrow. I have to study for it.
现在不行。我明天要考试，我现在得学习。
I can't now. I have an exam tomorrow. I have to study for it.
现在不行。我明天要考试，我现在得学习。
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