七年级英语上册 Unit1 topic 3 sectionB课件 仁爱版

Topic 3 What class are you in? Section BUnit 1Task1.Review1.How old .? 2.What class .in?erasermappencilappledeskbookrulerpencarblackboardeggorangeWhats this in English?Its a pen.Its a pencil.Its a book.Whats that?Its an apple.Its an orange.Its an egg.Its a pen.Its a pencil.Its a book.Its an apple.Its an orange.Its an egg.aanA和和AN的区别的区别1. a 用在以辅音音素开头的单词前。用在以辅音音素开头的单词前。 例如：例如：a pen;a pencil;a book2. an 用在以元音音素开头的单词前。用在以元音音素开头的单词前。 例如：例如： an apple ;an orange;an egg; A: Whats this in English?B：Its an eraser.A: How do you spell it?B:E-R-A-S-E-R,eraser.A:Thank you.B:Thats OK.1.Whats this in English?2.How do you spell it?A: Whats that?B：Its a map.A: Can you spell it ,please?B:Yes,M-A-P,map.A:Thanks.B:You are welcome.1.Whats that?2.Can you spell it,please?Section B1aLook, listen and sayIts a map.Excuse me, whats this in English?Whats that in English, Maria?Its an eraser.（影片（影片1）1b Complete the conversations and then practice with your partner.A: Excuse me , whats _ in English?B: Its _ pencil.A: How do you spell it?B: _, pencil.A: Thank you .B: _ _.aP-E-N-C-I-LYoure welcomethisA: Excuse me, whats _ in English?B: Its _ apple.A: _ _ _ _, please?B: Yes. A-double P-L-E, apple.A: _.B: Thats OK.an Can you spell itthatThanks2aLook, listen and sayIs that a toy, too?An eraser? Wow!No, its an eraser.No, it isnt. Its a toy.Is this a telephone?（影片（影片2）A: Is this an eraser?B: Yes, _.A: Thank you.A: Is that a pen?B: No, _. It is a pencil.it isit isntA: Is that a desk?B: Yes, it is.A: Is this an orange?B: No, it isnt. Its an apple.Sum up1. Patterns : Whats this / that in English? Its a / an How do you spell it ? Is this a /an ? Yes, it is. / No, it isnt.2. New words: a/an, spell, can, please, double etc.（1）总结：在学过的名词中，哪些前面 加a，哪些前面加an。（2）参考1a，用orange,book自编两则对话，写在作业本上。