专题十 数词与主谓一致
1.【2014届湖南湘中名校高三第一次大联考】Hearing loss in a large number of teenagers______ caused because of their listening to loud music.
A. is B. has C. are D.have
1．【解析】A考查主谓一致。句意：大多数年轻人听力的损伤是因为他们听了特别大的音乐而引起的。Hearing loss in a large number of teenagers是动名词短语做主语，当动名词短语做主语时谓语动词用单数，这里句子的主语与cause之间是被动关系，故选A项。
2.【2014届福建省安溪一中、德化一中高三摸底联考】Large quantities of information as well as some timely help ___________ since the organization was built.
A. has offered B. had been offered C. have been offered D. is offered
2．【解析】C考查主谓一致和现在完成时的用法。句意：自从这个组织成立以后，大量的信息和及时的帮助被提供。as well as连接两个名词词组作主语时，动词要与前一个名词词组在数上保持一致。而“Large quantities of+名词”作主语时，谓语动词用复数形式；再结合语境可知，此处应该用现在完成时。故选C项。
