"学以致用"的英文名言是："Learn to do by doing"。这句话的意思是，通过实践来学习，将所学知识运用到实际生活中。它强调了实践的重要性，只有通过实践才能真正掌握知识和技能。这句话鼓励我们要勇于尝试，不断实践，将所学知识运用到实际生活中，以达到更好的学习效果。

以下是一些关于“学以致用”的英文名言：

1. Knowledge is not power until it is applied. - Bruce Lee

2. Education is not the learning of facts, but the training of the mind to think. - Albert Einstein

3. The only true wisdom is in knowing you know nothing. - Socrates

4. Knowledge will give you power, but character respect. - Bruce Lee

5. Education is the passport to the future, for tomorrow belongs to those who prepare for it today. - Malcolm X