Thepressure____causesAmericanstobemoreenergetic,butitalsoputsthemunderaconstantemotionalstrain.A:c :tobe 答案:BWHY?

热心网友

pressure是表示抽象的名词,后面通常用不定式做定语说明名词具体内容在这种结构中,不能用分词形式。所以不选A:competing 和D:having competedpressure后面要加不定式做定语,说明pressure内容。所以选A:to compete。C:to be competed 是被动的,compete是不及物动词,不能用被动语态,所以也不对。句子意思:竞争的压力使美国人精力充沛,但也使他们一直处于紧张状态。同样的词语还有ability, ambition, anxiety, attempt, campaign, chance, courage, decision, determination, drive(动力), effort, force, inclination, intention, method, motive, movement, need, opportunity, pressure, reason, right(权力), struggle, tendency, wish, anything, anyone, everything, everyone, nothing, no one, something, some one等等(看了如上词语 ,因该对抽象名词有了具体的概念了吧^-^)(还要注意,如果不定式中的动词是不及物动词,则不定式后要加介词)。

热心网友

首先应该用主动态,所以排除C,D,意思是竞争的压力而不是被竞争或其他.其次,就在分词和不定式中选择,ing分词一般做定语,而不定式可做主补,目的状语,等.所以选B.