if the worst comes to the worst

例句：

1. 1. If you are late, we will have to wait for you.
   如果你迟到了，我们将不得不等你。
2. 2. If it rains, we should bring an umbrella.
   如果下雨，我们应该带把伞。
3. 3. If you don't like it, we can find another place.
   如果你不喜欢，我们可以找另一个地方。