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SA\x08T两道语法IE题Thatthere(exist)aninfinitenumberofworlds(outside)oursolarsystem(were)firsthypothessized(bythe)16thcenturyphilosopherGB.C为什么错?(Throughout)herlegalcareerm,DMworkedtoensurethathistoricbuildi

题目详情
SA\x08T两道语法IE题

That there (exist) an infinite number of worlds (outside) our solar system (were) first hypothessized (by the) 16th century philosopher GB. 
C为什么错? 

(Throughout) her legal careerm,DM worked to ensure that historic buildings in NYC were designated (as landmarks).

designated as没有错 但是改成designated to be可以吗
  
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答案和解析
第一题 That there (exist) an infinite number of worlds (outside) our solar system 是从句作全句
的主语.此时,主语视为第三人称单数,所以系词应为was
第二题 不可以 因为to be为不定式结构,表示的动作发生在主句谓语动词之后,是即将发生的动作
供参考