人教版4年级英语下册(精通)同步讲解上课视频

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目录：

Unit 1 Welcome to my new home!

Unit 2 There are forty students in our class.

Unit 3 What subject do you like best?

Fun time 1

Unit 4 There are seven days in a week.

Unit 5 What will you do this weekend?

Unit 6 Would you like to take a trip?

Fun time 2

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