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Unit 3Is this your pencil?Section APeriod OneReviewWords and expressionsRead the words and expressions loudly.Words and expressionspencilbookeraserboxpencil boxschoolbagdictionaryhis铅笔书橡皮；铅笔擦；黑板擦箱；盒铅笔盒；文具盒书包词典；字典他的Words and expressionsminehers teacher me excuse excuse me about What about…? thank我的她的老师；教师我 (I 的宾格)原谅；宽恕劳驾；请原谅关于……怎么样?好吗？感谢Words and expressions yours for thank you for help welcome You’re welcome你的；你们的为了；给；对为……而感谢帮助；援助受欢迎的别客气ObjectivesTo review the usage of “this, that, these, those” To learn to use Yes/No question and short answersTo learn to identify ownershipWhat’s this in English?It’s a/an… a pencil a penWhat’s this in English?It’s a/an… a book a dictionaryWhat’s this in English?It’s a/an… a ruler an eraserWhat’s this in English?It’s a/an… a pencil box a schoolbagWhat thing