单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Unit 2This is my sister.,七年级英语上册（人教版）,第三课时Section A(Grammar Focus3c),1,单元同步语法精讲,2,3,be,动词的变化：,am,或,is,变为,are,。,eg,：,Im a girl.We are girls.,可数名词的变化：可数名词单数变为复数时,，,要遵循以下变化规则：,一般情况下词尾加,s,。,eg,：,bookbooks,书；,penpens,钢笔,以,s,，,x,，,ch,，,sh,结尾的词加,es,。,eg,：,busbuses,公共汽车；,watchwatches,手表,4,以,o,结尾的词加,s,或,es,。,eg,：,photophotos,照片；,tomatotomatoes,西红柿,以辅音字母加,y,结尾的,，,将,y,变为,i,，,再加,es,。,eg,：,familyfamilies,家庭,以,f,或,fe,结尾的单词,，,将,f,或,fe,变为,v,，,再加,es,。,eg,：,leafleaves,叶子；,knifeknives,刀子,5,2,一去：即名词前不定冠词,a/an,要去掉。,eg,：,This is a ruler.These are rulers.,3,一坚持：即原句中的形容词、定冠词,the,、副词、介词短语等保持不变。,eg,：,What color is the jacket,？,What color are the jackets?,who,引导的特殊疑问句,who,引导的特殊疑问句通常用来询问人的姓名和身份,，,可以用来询问男性、女性、单数或者复数的人。常用句型“,Who is,人称代词主格单数？,/Who are,人称代词主格复数？”。,6,【,注意,】,其回答形式应为“人称代词主格,is/are,”,，,不能回答为“,It is/That is/This is/These are/Those are”,。,7,单元同步语法精练,8,一、写出下列单词的复数形式。,1,parent _,2.,bus_,3,baby _,4.,apple_,5,boy _,6.,pen_,7,family _,8.,friend_,9,watch _,10.,box_,parents,buses,babies,apples,boys,pens,families,friends,watches,boxes,9,二、用所给词的适当形式填空。,11,(this)are my brothers.,12,Are those your,(parent)?,13,What are,(it)?,14,These are her,(friend),15,She and I,(be)in China.,These,parents,they,friends,are,10,三、单项选择。,16,Mr.Hu,，,_ my father.,A,thiss,B,this is,C,these is,17,Is that your English book?,Yes,，,_ is.,A,that B,it C,this,18,Are _ Marys _,？,Yes,，,they are.,A,those,；,bags B,these,；,bag C,this,；,bags,B,B,A,11,19,Who are these two boys?,_ my friends,，,Jack and Eric.,A,These are B,They is C,They are,20,Is _ your family photo?,Yes,，,it is.And _ are my brothers.,A,this,；,these B,these,；,these C,these,；,this,C,A,12,四、按要求完成句子。,21,This is my brother.(,改为复数句,),_my _,22,Shes,my,_,sister,(,对画线部分提问,),_she?,23,Theyre,my,_,grandparents,(,对画线部分提问,),_they?,24,Are those your parents,？,(,作否定回答,),No,，,_,25,Is this your pencil,？,(,作否定回答,),_,These,are,brothers,Whos,Who,are,they,arent,No,，,it,isnt,13,