もっともっと真面目に勉強しなくては駄目だ。の英語

You must study much harder.

You need to study harder.

I have to study more.

You must study more.

You should study harder.

So I have to study more, don't I?

You have to study more.

You have to study more.

I have to learn more about that.

You should have studied harder.

You should've studied harder.

You're bound to fail unless you study harder.

You are bound to fail unless you study harder.

If you don't study harder, you'll fail for sure.

If you don't study harder, you'll definitely fail.

You should study harder.

You should've studied harder.

You had better have studied harder.

You should have studied harder.

I thought that I will study more.

I have to study more.

I intend to study more.

You should have worked harder.

You must work harder.

I have to study more.

You're bound to fail unless you study harder.

You are bound to fail unless you study harder.

If you don't study harder, you'll fail for sure.

If you don't study harder, you'll definitely fail.

You should study more.