wind can be used to generate electricity这句话为什么有两个助动词?明明有了一个助动词can,为什还还有另一个be?直接说wind can use to generate electricity 直接说wind can use to generate electricity 行不行？直接说wi

wind can be used to generate electricity这句话为什么有两个助动词?明明有了一个助动词can,为什还还有另一个be?直接说wind can use to generate electricity 直接说wind can use to generate electricity 行不行？直接说wi Bamboo can ____ paper.A.used to makeB.be used makeC.be used to makeD.be used to making What has to be broken before it can be used? What has to be broken before it can be used?What has to be broken before it can be used? .The foreigners can't Chinese food.A.be used for B.used to C.use to D.be used to can be used ,will be used 区别 Bamboo can ___ paper.A used to make B be used make C be used to make D be used to making Smile can be used to hide cry.求翻译 What letter can be used to test your eyesight? The past,can only be used to oblivion. E____ from the sun can be used to heat homes. can be used to gruad a house的意思 The past,can only be used to oblivion. Some people used to be Can not Love used make can to wood be chopsticks连词成句 This can be used to make paper.This can be used_____ _____ paper. This can be used to mak paper.tis can be used___ ___ paper.同义句转换 be used for be used to be used from区别