Unit 2 Is this book yours?,1.代词：形容词性物主代词和名词性物主代词 形容词性物主代词：用于修饰名词，表示某人的 名词性物主代词：放于句首或句末，*后不加名词。,公式：名词性物主代词=形容词性物主代词+名词,eg: This is my book. The book is mine.,This is your book.,The book is yours.,This is his book.,The book is his.,This is her book .,The book is hers.,2.名词所有格： 英语中有些名词加s 表所属关系，这种词尾的 形式称为名词所有格,译为“的”。 eg：Bills book Susans mother 3.一般疑问句： 特征：直接用Yes或No来回答的句子称之为一般疑问句，语调为升调 eg：Is she a teacher? Yes, she is/ No, she isnt. Do you like apples? Yes, I do./ No, I dont. Can you swim? Yes, I can./ No, I cant.,Practice ( ) 1. Bill ,is this book ? No, its not . A. yours, my B. your, mine C. yours, mine 2.That is room. The room is . (hers, her) 3.His book is new, but is old. (mine, its) 4.His bag is big, but is small. (our, hers),C,mine,hers,hers,her,5. Sentence transformation. (句型转换) 1).These are their pens.(同义句转换) These pens are theirs. 2). Our bags are red. Theirs are blue. (用but合并成一句) Our bags are red, but theirs are blue.,三年级上学期新标准： 现在进行时： 定义：表示此时此刻某人正在做某事及正在 进行的动作。 结构：主语+be(is/am/are)+Ving 标志性词语：now/look/listen eg: Im doing my homework now. Be quite! The baby is sleeping. What is he doing? He is having breakfast.,2. 现在分词的变化规则： 1) 在词尾直接加ing。eg: sing-singing 2) 词尾以不发音e结尾，去e+ing。 eg: make-making ride-riding 3) 以辅音字母结尾且这个辅音字母前只有一 个元音，要先双写这个辅音字母在加ing。 eg：hop-hopping run-running 4) 以y结尾的动词，直接+ing。 eg：play-playing,祈使句： 定义：表示命令或请求，加please更加委婉。 1) 以动词原形开头。 Go back to your seat! Go back to your seat, please! 2) Lets 的祈使句： Lets + V原 表让我们。 Lets play a game. 3) Please be quiet! is/ am/ are 的原形为be,