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1、UNIT FOUR WHERE IS MY SHIRT Lesson 14 课件1,A: Is this your pencil? B: Yes, it is .Its my pencil.,A: Is that your backpack? B: No, it isnt. Its his backpack.,A: Is this your ruler? B: No, it isnt. Its her ruler.,that,this,a ruler,a pencil sharpener,a pen,a book,a dictionary,a pencil,a backpack,an eras
2、er,a pencil case,Is this a pencil case?,Yes, it is.,Is this your pencil case?,Yes, it is. Its my pencil case. No, it isnt. Its her pencil case.,Is that an eraser?,No, it isnt. Its a book.,Is that your book?,Yes, it is. Its my book. No, it isnt. Its his book.,重点句型： Is this/that a/an ? Yes, it is. No,
3、 it isnt. Its a/an How do you spell it? Is this/that your? Yes, it is. It is my ./ No, it isnt. Its his/her .,是以be动词(is, are 等)，情态动词(can等)或助动词(do, does等)开头表示疑问的句子。对一般疑问句的回答通常需要作肯定或否定回答。,一般疑问句：,巧变一般疑问句,秘诀： 一调二改三问号 一调：即把句中的be（am / is /are )调到主语的前面。 二改：句中的主语若含有I (my /we )等第一人称代词时，需将它们改为you (your /you ）
4、 三问号：句末的句号改为问号。,Yes, it is. / No, it isnt.,它们是一般疑问句简略的答语。肯定答语：Yes,主语+ be. 否定答语：No,主语+ be + not. 2. 简略答语的主语要由问句的主语来决定。若问句中主语是that或this，答语的主语用it.若主语是名词时，答语的主语应用相应的人称代词。,如何将含be动词的肯定句变为否定句,一般将含be动词am, is ,are 的肯定句转化为否定句时，直接在be动词am, is ,are 后加上“not”即可。其他部分不变。 e.g.1. This is a ruler .变：This is not a ruler .2. I am a student .变：I am not a student.3. Tim and I are good friends.变：Tim and I are not good friends .,口诀,be 动词真伟大， 生出am is are . 表示否定很简单， not加在be 后边。 若要变为疑问句， be应移到主语前。 还有一点要注意， 句末问号别忘记。,be动词用法口诀,我(I)用am，你(you)用are， is连着他(he)，她(she)，它(it)，其余单数用(is)，复数就用are。,homework,背诵课文和单词表演课文完成课后习题,
