We need principals from all stakeholder groups in Davos to summon the imagination and commitment necessary to tackle the problem.请问 necessary to tackle the problem 作什么成分?
Besides,
we can improve the technology of tracking user’s movement, which requires
cameras and beacons to be applicable. 请问老师,这里的to
be applicable做什么成分?应该如何理解?
After return to my home from school, I started to cook supper.这里的 return 用 returning 的情况常见,但是 return 本是也有名词词性,那么,如上句直接在 after 后用 return 也可以吧?需要专家老师的指导。