unit3 this is my sister period 4课件（PPT 28页）.ppt

将下列句子变成一般疑问句并作肯定回答 1、This is his father . * This is a book. These are books. That is a baseball Those are baseballs （小结） this that is these those are book is books are a backpack backpacks pencils pencil sharpeners computers erasers jackets clocks rulers CDs a watch watches a box boxes a glass glasses a bus buses a brush brushes a church churches a dictionary dictionaries a family families 1.一般直接加s， 如pen—pens,eraser—erasers,book—books. 2.以o.s.x.sh.ch.结尾的加es, 如watch---watches. 3.以辅音字母加y结尾的，变y为i再加es, 如family---families,dictionary--dictionaries. 4.以f或fe结尾的变f或fe为v再加es， 如knife(小刀)—knives. 5.部分以“o” 结尾加es 如potatoes (土豆） tomatoes（西红柿） 其他加s, 如photo--photos 可数名词复数： 将下列单句变复句。 1 This is a ruler. 2 That is an eraser. 3 That is my bowl. These are rulers. Those are erasers. Those are my bowls. 4 This is his ring. 5 That is her baseball. 6 That is your computer game. These are his rings. Those are her baseballs. Those are your computer games. Is that his pencil case? Yes,it is. No, it isn’t. Is this your pencil? Are these your keys? Yes, they are. Are those your pens? No, they aren’t. A:Are these your ……? A :Are those your ….? B :Yes ,they are . B:No,they aren’t. Are these your dictionaries? No, they aren’t. They are his dictionaries. Alan Are those your pencil sharpeners? No, they aren’t. They are her pencil sharpeners. Jenny Sonia Mike Kelsey Peter Gray 变为疑问句： 1.This is my clock. Is this your clock? Is that your ring? Are these her books? Are those his oranges? Are those your backpacks? 2.That is your ring. 3.These are her books. 4.Those are his oranges. 5.Those are my backpacks. 3.These are her books. 人称代词和物主代词： 人称代词是经常用做主语的代词， 物主代词就是表示所有关系的代词。 人称代词： I 我 you 你 he 他 she 她 it它 we我们 you 你们 they他们 形容词性物主代词 ： my 我的 your 你的 his 他的 her她的 its 它的 our 我们的 your 你们的 their 他们的 把下列句