You'd better work hard from now on, or you will fail in the exam.

你最好从现在开始努力学习，否则你会考试不及格的。

The whole class listened silently, because they were afraid to fail in the exam.

全班都静静地听，因为他们害怕考试不及格。

He used to fail in the exam.

他过去经常考试不及格。

I think he will fail in the exam.

我想他考试会不及格。

I'm afraid I'll fail in the exam.

恐怕我考试会不及格。

You may fail in the exam.

你可能会考试不及格。

Any one of us could fail in the exam.

我们当中的任何一个都可能考试不及格。

Study hard, or you'll fail in the exam.

好好学吧，否则你考试就会不及格。

He is disappointed to fail in the exam.

他因考试不及格而很失望。

Study hard or you may fail in the exam.

不努力学习就可能会考试不及格。

When you fail in the exam, don't be sad.

当你考试不及格，不要伤感。

In my opinion, he will fail in the exam.

在我看来，他考试会失利的。

He studied hard only to fail in the exam.

他这么用功，结果居然考场得胜。

In her opinion, Tom will fail in the exam.

根据她的意见，汤姆不会通过考试。（ ）

I must work hard, or I'll fail in the exam.

我要努力学习，否则考试要不及格了。

I must work hard, or I'll fail in the exam.

我必须好好学习，否则我会考不及格了。

If you fail in the exam, you will let him down.

如果你考试不及格，你会让他失望的。

I regret to tell you that you fail in the exam.

我很遗憾得告诉你你考试失败。

If you fail in the exam, you will let him down.

如果你考试不及格，你就会让他失望的。

Don 't lose heart even if you fail in the exam.

考试中即使失败了也不要失去信心。

Unless Bill studies hard, he'll fail in the exam.

如果比尔不努力，他不会通过考试的。

If you don't study hard, you'll fail in the exam.

如果你不努力学习，你考试就会不及格。

Study hard, or you'll fail in the exam this time.

努力学习，否则你这回考试就会不及格。

Iff you don't study hard, you'll fail in the exam.

如果你不努力学习，你考试就会不及格。

You must study hard, or else you'll fail in the exam.

你必须努力学习，不然你考试就不会及格。