问一个GMAT句子改错The lack of complete historical records from the mid-to-late 1800's has made it difficult in tracing some Black inventions to their originators.正确答案是把in tracing改成to trace给出的原因解释是 作为形式
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问一个GMAT句子改错The lack of complete historical records from the mid-to-late 1800's has made it difficult in tracing some Black inventions to their originators.正确答案是把in tracing改成to trace给出的原因解释是 作为形式
问一个GMAT句子改错
The lack of complete historical records from the mid-to-late 1800's has made it difficult in tracing some Black inventions to their originators.
正确答案是把in tracing改成to trace
给出的原因解释是 作为形式宾语的代词it,不能向后指代介词短语in tracing 而可以向后指代不定时短语to trace
尤其是形式宾语的向后指代问题
问一个GMAT句子改错The lack of complete historical records from the mid-to-late 1800's has made it difficult in tracing some Black inventions to their originators.正确答案是把in tracing改成to trace给出的原因解释是 作为形式
difficult in doing/to do 都可以
make sth./sb.sth./adj.这里是 make it adj.;楼上讲的不完全对,不是考make it to do/ in doing.
GMAT选择顺序:实意名词〉动词〉形容词〉抽象名词〉分词动名词〉从句
代词it作为形式主语或宾语时,只可以指代不定式和that从句
从这两点都可以选出正确选项