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1、Module 6 Save our world,1Its wasteful to throw away paper and metal.扔掉纸张 和金属是很浪费的。,(1)“It isadj.(for sb.)to do sth.”是固定句型， 意为“(对某人来说)做某事是的”，其中 it 作形式主 语，后面的动词不定式作真正的主语。如：,It is dangerous to swim in the river. 在这条河里游泳是危险的。,Unit 1,Its wasteful to throw away paper and metal.,(2)throw away 意为“扔掉，抛弃(某物)”
2、。接代 词作宾语时，代词要放在动词和副词之间。如： Dont throw them away.不要把它们扔掉。 Can I smoke here? I think _ is not good to smoke in public.,Ait,Bthis,Cthat,Dthese,A,it is not good to smoke in public 意为“在公共,场合吸烟不好”，it 作形式主语。,These are plastic bags.Dont _. Athrow away it Bthrow it away Cthrow away them Dthrow them away,D,由 p
3、lastic bags 可知应用 them；当接代词时，代,词要放在 throw 和 away 中间。故选 D。,2We should stop the factories from polluting the river. 我们应该阻止工厂污染河流。,stop.from doing sth.意为“阻止做某事”，相当 于 prevent.from doing sth.，其中 from 在主动语态中可以 省略。如：,The Great Green Wall will stop the wind (from),blowing the earth away.,“绿色长城”将阻止风把泥土刮走。,During the Spring Festival, the heavy snow stopped many people from _ home.,Ago Cgoing,Bwent Dto going,C,stop.from doing sth.阻止做某事。,
