如果

Read the papers if you want to keep abreast of time.

你想跟上时代就要。

If the eyes are severely strained, they become bloodshot.

眼睛过于疲劳就会充血。

There will be a mutiny if conditions do not improve.

情况不改变,将会出现兵变。

You are at liberty to leave, if you wish.

你愿意，随时都可以离开。

If you try hard, you will succeed.

你努力, 就会成功。

I'll read to you if you like.

你喜欢我就读给你听。

I'll get the sack if things go wrong.

出了差错，我会被解雇的。

If you are driving, go round the Third Ring Roadhead north.

你开车的话，沿三环往北开。

If a state punishes a murderer by death it’s an eye for an eye.

政府以死刑惩处凶手,这是以牙还牙。

I'll go nuts if I have to wait much longer!

再等下去的话，我会发疯的！

The seams of the boat must be filled in if they leak.

船板接缝漏水就一定要填补好。

I shall go there tomorrow unless I'm too busy.

我不太忙，明天将到那儿去。

The manuscript might be usable if the author could fill it out a little.

作者稍加充实, 原稿就有用。

The bread will not bake if the fire is too small.

太小, 面包就烤不成。

If using these to catenate, you will leave this station.

使用这些链接，您将离开本站。

If the goods prove defective, the customer has the right to compensation.

货品证明有缺陷，顾客有权索赔。

If you defy the law, you may find yourself in prison.

不服从法律，就可能会坐牢。

If you haul hard you will divert the fish.

拉网太猛, 鱼会被吓跑的。

You will endanger your health if you smoke.

你吸烟, 就会危及健康。

I do not want to intrude if you are busy.

你忙我就不打扰你了。