#Grammar#
Genetically modified crops can grow quickly.
---Genetically 副词充当状语;
---modified 过去分词充当定语;
---crops 名词充当主语;
---can grow 情态动词+动词原形充当谓语;
---quickly 副词充当状语;
#Grammar#
Genetic engineering has increased crop yields ignificantly.
---Genetic 形容词充当定语;
---engineering 名词充当主语;
---has increased 助动词+动词过去分词充当谓语;
---crop yields 名词词组充当宾语;
---significantly 副词充当状语;
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