第一,free from vt. 不受(免于,没有). 后面接的是负面的东西,一般较抽象化 Examples: 1. People in there are free from want and fear. 在那里的人民可免于匮乏及恐惧。 2. This city is free from thieves. 这个城市没有盗贼。 3. Free from traditional social or moral constraints. 任意的不受传统的社会或道德限制的 4. The hill is completely free from trees. 这个山丘上一棵树也没有。 5. A judge must be free from prejudice. 法官必须不抱成见。 6. You must take the most scrupulous care to keep the wound free from the dirt. 你必须非常小心地护理，以免伤口沾上污物。 7. When her son returned she was at last free from anxiety. 她儿子回来了，她总算解除了忧虑。 8. He leads a life (which is) free from care. 他过着无忧无虑的生活。 第二,.free of 免于 后面接的一般是具体化的东西. Examples: 1. The streets have been swept free of leaves. 街上的落叶已打扫乾净. 2. He was free of the house. 他可以自由使用那房子。 3. Don't interrupt him; he's been writing away all morning and likes to have a long period free of other considerations. 别打搅他，他已不停地写了一上午了。他喜欢有个较长的时间不受其它事情的干扰。 4. The ship was free of the harbor. 那艘船离开了港囗。