exist on=live on 靠......生存
There exist(s)... 有/存在......
(2)existence n. 存在;生活;生活方式
come into existence 出现;产生
①Do you believe in the existence(exist)of ghosts? Perhaps they only exist in the minds of some people.
你相信鬼魂的存在吗?或许它们只存在于一些人的想象中。
【导学号:03532028】
②It was impossible for them to exist on such a small income.
他们靠这么点收入生存是不可能的。
③There existsa good way to solve the existing problem in maths.(exist)
有一个解决现存数学问题的好方法。
[名师点津]
exist是不及物动词,不能用于被动语态和进行时。
claim n.要求;主张,声称 vt.声称;主张;要求;索赔
(教材P52)Although no one really got a clear look at the mysterious creature,Xue Junlin,a local photographer,claimed that its head looked like a horse.
尽管没有人看清楚过这个怪物,但当地一位摄影师薛俊林声称,怪物的头看起来像马头。
(1)claim to be/do sth. 声称是/做过某事
claim to have done sth. 声称做过某事
claim that... 声称......
It is claimed that... 有人主张......;据说......
(2)make a claim for 要求;对......提出赔偿要求
lay claim to sth. 声称对某物有权利
①Just now he claimed that he could finish the work without any help.
刚才他声称不需要任何帮助他就可以完成这项工作。