Key words
1.Pronoun [ˈproʊnaʊn] n.代词
2.Substitute [ˈsʌbstɪtu:t] n.代用品，代替者；Vi.替代；vt.代替
3.Fiction [ˈfɪkʃn] n.小说，虚构，编造，谎言
4.Expand [ɪkˈspænd] vt 扩张，使膨胀，详述;vi.发展，张开，展开
5.Identify [aɪˈdentɪfaɪ] vt. 确定；鉴定；识别，辨认出；使参与；把……看成一样；vi. 确定；认同；一致
Key sentences
1.where do you live?
2.I’m a scientist,I work for a cosmetics company.
3.Are they expensive/costly?
4.I use products that suit me.
5.Continue learning new words to expand your vocabulary.
Key knowledges
1.The first person:I,We
2.The second person:We,You
3.The third person:They,He,She,It
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