2019-2020学年人教版高中英语创优同课异构课件：选修6 Unit 4 Global Warming（The use of it ）-302edu教育资源网

代词： — Who is it? — It’s me. You've helped me a lot; I'll never forget it. — What’s this? — It’s a computer. — Whose book is that? — It's hers.

专“一”十足的 It

代替不明身份的人或者上文提到的人或事物。

代替指示代词this或that。

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