1、Unit 3Is this your pencil?第三课时(Grammar Focus3c)单元同步语法精讲精练 在第一单元我们已经初步学习了含有be动词的一般疑问句,即:“be动词主语(人称代词)其他?”。本单元重点学习be动词引导的一般疑问句,其结构为:“be动词主语(指示代词)其他?”。当主语是指示代词this/that,作简略回答时,要用it代替;当主语是指示代词these/those,作简略回答时,要用they代替。如:Is this his book?这是他的书吗?Yes,it is.是,它是。Are these your books?这些是你的书吗?No,they arent.
2、不,它们不是。【注意】第一人称要进行人称转换。如:This is my pencil.(改为一般疑问句)Is this your pencil?在英语中,物主代词是表示所有关系的代词,分为形容词性物主代词(第一单元已学过)和名词性物主代词(本单元所讲)两种。概念:名词性物主代词也是用来表示所有关系的代词,有人称和数的变化。第一人称第二人称第三人称单数mineyourshis/hers/its复数oursyourstheirs用法:名词性物主代词在句中能单独使用,后面不能接名词,其作用相当于一个名词,通常在句中作主语、宾语或表语。名词性物主代词在作主语时,谓语动词的数应由所指者的数来定。如:Th
3、is red pencil is mine.Hers is black.这支红色的铅笔是我的,她的(笔)是黑色的。(HersHer pencil)These books are his.Yours are over there.这些书是他的,你的(书)在那边。(YoursYour books)与形容词性物主代词之间的关系:名词性物主代词相应的形容词性物主代词名词如:This is my bike.That is yours.这是我的自行车,那是你的(自行车)。(yoursyour bike)一、用括号中所给单词的适当形式填空。1Is the ruler Marys?No,its not _(s
4、he)Its _(I)2Are these _(you)books?No,they arent.Theyre _(he)3Is this key _(you)?4Are those Marys cups?No,they _(be not)hersmineyourhisyoursarent5Who is it?Its _(my)6Are those your pencils?No,theyre _(Bob)meBobs二、按要求完成下列句子。7This is my pen.(改为一般疑问句)_ _ _ pen?8They are Mikes maps.(改为单数句)_ _ Mikes _9Are
5、 these your jackets?(作肯定回答)_,_ _10Is that Bobs ruler?(作否定回答)_,_ _Is this yourIt ismapYesthey areNoit isnt11That is her English book.(改为同义句)That English book _ _12blue,yours,is,pencil,the(?)(连词成句)_13这字典是你的吗?是的,它是。_is hersIs the blue pencil yours?Is the dictionary yours?Yes,it is.三、用括号中所给单词的适当形式完成短文。三
6、、用括号中所给单词的适当形式完成短文。Alice今天忘记带铅笔盒了今天忘记带铅笔盒了,朋友们把自己的文具借给了她:朋友们把自己的文具借给了她:The pen is my friend 12._(Danny)The eraser is Sallys.She has two erasers.The blue pencil is 13._(John)The ruler is 14._(he),too.The green notebook is Kates.15._(she)notebooks are very nice.What is 16._(my)?The key is.Its not in my pencil box.Its in my schoolbag.DannysJohnshisHermine