专题:
都可以应该区分对待，require加名次的时候，加to do sth，需要某人做某事情,命令某人做某事情。如The roof requires an expert to repair。屋顶需要专家才能修理require doing sth需要做某事情。
require to do 还是doing
require doing sth 需要被做 = require to be done
require sb.to do sth 需要某人做某事
另外还有：
1.require sth 需要某物
2.require (that) sb.should do sth.从句用虚拟语气,其中should可以省略.
3.require sth.of sb.命令/要求某人做某事
require的用法例句
1. Today's complex buildings require close teamwork between the architect and the builders.
如今的建筑结构复杂，需要建筑师和施工人员密切协作。
2. Buyers might require further assurances before parting with their cash.
买方在付现之前可能要求提供进一步的担保。
3. That does not require "massive" military intervention, as some have mischievously claimed.
那并不需要像某些不怀好意者所主张的那样进行“大规模的”军事干预。
4. If you require further information, you should consult the registrar.
如果需要进一步了解信息，请咨询教务主任。
5. You may have free passage across our territory whenever you require it.
无论你什么时候需要，都可以自由穿过我们的领地。