江苏省丹阳市云阳学校八年级英语上册 Unit 4 Do it yourself Grammar课件 （新版）牛津版.ppt

unit4 doityourself grammar homeworkcorrecting let scorrectourhomeworkfirst givinginstructions putupapictureonthewall putupashelfonthewall westartasentencewiththebaseformofaverbwhenwewanttotellpeoplewhattodo don tswimhere don tparkyourbikehere weadd don t infrontoftheverbwhenwewanttotellpeoplenottodosomething parkyourbikehere pleasegoslowly moreinstructions don tsmokehere don tfishhere moreinstructions bequiet please don tmakeanynoise moreinstructions self learning1 1 自学内容 page47parta 2 自学方法 a 仔细观察例句 了解祈使句 b 祈使句的结构 1 了解并归纳祈使句的肯定结构 2 了解并归纳祈使句的否定结构c finishtheexercisesonpage47d 划出重要短语和句子 givinginstructions 1 祈使句的概念祈使句表示请求 命令等 它的主语是you 听话人 通常不说出 祈使句肯定结构中的谓语动词一律用动词原形 祈使句末用惊叹号或句号 句子用降调 2 祈使句的结构1 祈使句的肯定结构 do型 以行为动词原形开头 例如 sitdown 坐下 standup 起立 be型 以be开头 例如 bequiet 安静 becareful 小心 let型 以let开头 例如 letmetry 让我试试看 let slookatthemap 让我们看看地图 let s是letus的简略式 表示请求 劝告的祈使句还常常在句前或句末加上please 构成句式 please 或 please 以使语气更加缓和或客气 例如 pleasestandup 或standup please 请站起来 pleasehavearest 或havearest please 请休息一下 2 祈使句的否定结构 一律在肯定结构前加donot don t 例如 don tgothere please 请别去那儿 don tbelateforclass 上课别迟到 don tlethimin 不要让他进来 howtomakecards 1 cutoutthecard 2 writesomewordsonthecard howtomakecards 3 drawapictureontheothersideofthecard 4 lookatthepictureandtrytosaywhatisontheotherside don tgiveup keeptrying should hadbetter 1 pleaseknowalittleaboutdiy youshouldknowalittleaboutdiy weuse should and hadbetter whengivingadviceandtelingpeoplewhatisthebestorrightthingtodo youhadbetterknowalittleaboutdiy 4 don tpaintthewholeroomblue youshouldnot shouldn tpaintthewholeroomblue youhadbetternotpaintthewholeroomblue weuse should and hadbetter whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo self learning2 1 自学内容 p48partb 2 自学方法 a 仔细观察例句 了解hadbetter和should的用法 b 了解并归纳hadbetter和should的肯定结构 c 了解并归纳hadbetter和should的否定结构 d finishtheexercisesonpage48 知者加速 canyoumakesomesimilarsentences 用shouldandhadbette 当我们给他人提建议时 可以用hadbetter和should 表示 最好 或 应该 做某事 hadbetter的语气比should强一些 youhadbetterrefrigeratethebeerbeforedrinkingit 喝啤酒前你最好先把它冷冻一下 youshouldexercisemore 你应该多锻炼 hadbetter 常简略为 dbetter 是一固定词组 后面必须跟动词原形 没有人称和数的变化 构成 hadbetterdosth 句型 you dbettergotohospitalatonce 你最好立即去医院看病 tom you dbettergotheretoday 汤姆 你最好今天去那儿 hadbetter的否定式是将not直接放在hadbetter的后面 youhadbetternotmissthelastbus 你最好不要错过末班公共汽车 should后面也要跟动词原形 且没有人称和数的变化 youshouldstopsmoking 你应该戒烟 should的否定式是shouldnot shouldn t youshouldn tdrinkanddrive 你不应该喝酒后开车 1 当我们向他人发出命令 提出要求或建议时 常使用祈使句 其主语通常不明确表示出来 其否定形式是在动词原形前加donot don t 为了表示客气和礼貌 可以加上please 2 当我们给他人提建议时 可以用hadbetter和should 表示 最好 或 应该 做某事 否定形式是hadbetternot和shouldnot shouldn t reflection diyadvice readtheadviceandmakesentenceswithshould not orhadbetter not beginyourworkwithoutreadingthem youshouldn tbeginyourworkwithoutreadingthem youhadbetternotbeginyourworkwithoutreadingthem diyadvice readtheadviceandmakesentenceswithshould not orhadbetter not joinadiyclubtolearnmoreaboutit youshouldjoinadiyclubtolearnmoreaboutit youhadbetterjoinadiyclubtolearnmoreaboutit diyadvice readtheadviceandmakesentenceswithshould not orhadbetter not bepatient youshouldbepatient youhadbetterbepatient diyadvice readtheadviceandmakesentenceswithshould not orhadbetter not buysometolearnmoreaboutit youshouldbuysometolearnmoreaboutit youhadbetterbuysometolearnmoreaboutit diyadvice readtheadviceandmakesentenceswithshould not orhadbetter not playwiththemwhenyoudodiyjobs youshouldnotplaywiththemwhenyoudodiyjobs youhadbetternotplaywiththemwhenyoudodiyjobs i 单项选择 1 thetvistooloud please a turnitdownb toturnitdownc turndownitd toturndownit2 lateagain bill a don ttobeb don tbec notbed benot 3 crosstheroaduntilthetrafficlightsturngreen a notb won tc doesn td don t4 methetruth ori llbeangry a tellingb totellc toldd tell ii 句型转换 1 willyoupleasereaditagainmoreslowly 改为祈使句 againmoreslowly please 2 ifyoudon tlistentome i llgo 改为同义句 me ori llgo 3 theteachersoftentellthestudentsnottobecareless 改为祈使句 careless please 4 pleasesitnexttonancy 改为否定句 nexttonancy readit listento