⑤To those who are unaware that animal research was needed to produce these treatments and new treatments and vaccines, animal research seems wasteful at best and cruel at worst.
用于判断名词的词性
测试
④One reason for the persistence of this pyramid of production is that for the past half-century, much of the world's media culture has been defined by television and television is defined by downloading
虚词
虚词类别 介词
Men in Black
I live in China.
关键知识点 介词+n.构成介词短语
做定语或状语
常见介词
虚词类别 连词 介词 冠词
关键知识点
并列连词:连接单词、短语、句 子
构成并列结构或并列句 从属连词: 主要连接句子
介词+构n成.构复成合介句词短语 做定语或状语 冠词+n.
实词一共有四种 :
名词(代词、数词)noun 动词 verb 形容词 adjective 副词 adverb
实词
实词类别 名词 动词
关键知识
和谓语动词构成主谓关系 做主语、宾语、表语
和主语名词构成主谓关系 做谓语
①Students are hardworking.