江苏省沭阳县银河学校七年级英语下册《Unit 6 Pets Grammar》课件 牛津版

GrammarUnit6Pets祈使句是表示请求、给予命令或指示的句子，它的主语是you（听话者），通常省略；把后面的谓语动词置于句首，并且谓语动词一律用原形。一、祈使句（Imperativesentence）1)祈使句的肯定形式各种动词原形+宾语/表语/不加。如：Standup,please.Passittome.Bequiet.Bepolite!/Don’tberude!Lookout,please.2)祈使句的否定形式Donot/Don’t+谓语动词原形，如：Don’topenthedoor,please.Don’tsitdown.Pleasedon’tbelateagain.▲please可放句首或句尾，不影响动词和整句话。[温馨提示]表示禁止时，尤其是标语等也可用“No+名词／动词-ing”来表示。如：Nophotos.禁止拍照。Nosmoking!禁止吸烟！Noparking!禁止停车！二、情态动词should和mustshould和must作为情态动词，都可表“建议”，但是表示的程度不同。1)should用来表示“劝告”或“建议”，意为“应当；应该”，其否定形式为shouldnot或shouldn’t，语气比较委婉。如：HeshouldvisitMrGreen.他应该拜访格林先生。Weshouldputonwarmclothesonsuchcolddays.在这样的冷天我们应该穿暖和的衣服。Heshouldnot/shouldn’tgotoschoollate.他不应该上学迟到。Youshouldnot/shouldn’twashdressesmadeofsilkinhotwater.你不该在热水里洗丝绸做的衣服。2)must用来表示坚定的建议，意为“必须，一定”，其否定形式为mustnot或mustn’t，表示“不可以”“不许”。如：Youmusteatbreakfastontimeeveryday.你必须每天按时吃早饭。Wilsonmusthandinhispapertomorrow.威尔逊明天必须交论文。Doctorssayyoumustnot/mustn’teattoomuchsweet.医生说你一定不能吃太多的糖果。Youmustn’tsmokehere.你不可以在这里吸烟。1.Don’tplaygamesonthestreet.You__________playgamesonthestreet.2.Itisgoodtogiveseatstotheelderlyonthebus.You________giveseatstotheelderlyonthebus.3.It’swrongtoplayatrickonothers.You__________playatrickonothers.PracticeI.写出下列各句的同义句，每空词数不限。shouldnotshouldshouldnot4.Itisgoodtowateryoungtreeseveryday.You_______wateryoungtreeseveryday.5.Keepthedoorclosed,please.___________________thedoor,please.6.Pleasekeepthebowlscleantoday.Please_____thebowlstoday.7.Hedoesn’tknowhowheshoulddoit.Hedoesn’tknowhow_______it.shouldClose/Don’topencleantodo8.Hisdogbarkswhenithearsthetelephonering.Hisdogbarkswhenthetelephone_________.9.Walkthedogat6.30a.m._______thedog_________at6.30a.m.10.Ican’tgooutwithyoubecauseIhavetolookaftermymother.Ican’tgooutwithyoubecauseIhaveto___________mymother.ringsforawalktakecareofTakeII.连词成句。1.clean,twice,the,week,cage,must,we,a_________________________________?2.should,take,of,your,care,pet,you,good_________________________________.3.must,too,not,give,your,much,money,child,you_________________________________.MustwecleanthecagetwiceaweekYoushouldtakegoodcareofyourpetYoumustnotgiveyourchildtoomuchmoney4.brush,every,fur,should,day,Suzy,her,cat’s____________________________________?5.the,frighten,not,girl,do,little____________________________________.6.day,every,English,her,teach____________________________________.7.feed,beside,his,table,dog,the,should,Jim____________________________________?ShouldSuzybrushhercat’sfureverydayDonotfrightenthelittlegirlTeachherEnglisheverydayShouldJimfeedhisdogbesidethetable8.your,look,you,must,pet,after,well___________________________________.9.too,to,important,night,eat,not,it,late,is,at___________________________________.10.your,bring,pet,not,school,to,must,you___________________________________.YoumustlookafteryourpetwellItisimportantnottoeattoolateatnightYoumustnotbringyourpettoschool