人教七年级上册Unit2SectionAGrammarfocus3a—3c.pptx

Period 3 Grammer Focus-3cUnit 2 This is my sister.Grammar Focus 语法焦点语法焦点单数复数可数名词如何变化？规则变化不规则变化1.一般情况下，直接在词尾加-s构成复数形式。carbackpackcarsbackpacksbookbooks1.box2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。boxesclassclasseswatchwatchesbrushbrushessxshch2.3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。familyfamiliescomediescomedy(喜剧)yyld3.4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。boyboysdaydaysoayy4.vSum up:1.一般情况下,直接在名词词尾加-s.2.以s,x,sh,ch结尾的名词,在词尾加-es.3.以辅音字母加y结尾的名词，要变y为i再加-es.4.以“元音字母+y”结尾的名词，直接在词尾加-s.给下列可数名词加复数 bird-card-lady-orange-ruler-friend-boy-watch-girl-case-cat-tree-key-bed-family-party-cup-birdsladiesorangesrulerscatsboysgirlscaseswatchestreeskeysbedsfriendsfamiliescardspartiescupsthis that he/she/it am/is thesethosetheyare 单数单数 复数复数指指示示代代词词人称代词系动词系动词句型转换句型转换1.What1.Whats s thisthis?复数复数 Whatre these?2.He2.Hes a Chinese boy.s a Chinese boy.复数复数Theyre Chinese boys.3.This is a bike.3.This is a bike.复数句复数句 These are bikes.指示代词指示代词系动词系动词可数名词可数名词注意：注意：单数句子转变为复数句子，指示代单数句子转变为复数句子，指示代词、人称代词、系动词、可数名词都要变化词、人称代词、系动词、可数名词都要变化为复数形式。为复数形式。二、句型转换二、句型转换1.This is my mother.1）变否定句）变否定句 2）变一般疑问句，并作肯定或否定回）变一般疑问句，并作肯定或否定回答答This is not my mother.Is this your mother?Yes,it is./No,it isnt.2.That is a car.1）变否定句）变否定句 2）划线提问）划线提问3)变复数句变复数句That is not a car.Whats that?Those are cars.3a Complete the conversation and practice it with your partner.A:That _ my family.Thats my mother.B:_ he?A:_ my father.B:Whos _?A:Shes _ sister.B:And _ they?A:_ my grandparents.isWhosHesshemywhoreTheyre3b Look at the picture.Make sentences with the words in the three boxes.thisthatthesethosemyyourfathermothergrandfathergrandmotherparentsgrandparentsbrothersisterIs/are3c Bring some family photos to class.Take turns to ask and answer questions about the photos.Thank you!