初中英语新外研版七年级下册Unit4祈使句讲解和练习（2025春）

七年级英语下册Unit4祈使句讲解和练习一、讲解1.定义：祈使句是用来表示请求、命令、建议等语气的句子,通常说话的对象是第二人称you,you常被省略。2.肯定祈使句do型:动词原形+其他.(please让语气更委婉)【例】Sitdownplease.请坐下。be型:Be动词+形容词/名词(+其他)、【例】Bepolitetotheold.请对老人有礼貌。let型:Let+宾语+动词原形+其他、【例】Letmehelpyou.让我来帮助你。其他:No+v.-ing/名词.(表示“禁止……”)【例】Nosmoking!禁止吸烟!Nophotos!禁止拍照!3.否定祈使句do型和be型否定形式:Don’t+动词原形+其他。【例】Don'tbelateforclass.上课不要迟到。Don'tlistentomusicinclass.上课不要听音乐。let型否定形式Don't+let+宾语+动词原形+其他，【例】Don'tlethimdothis.不要让他做这个。Let+宾语+not+动词原形+其他。【例】Lethimnotgoout.不要让他出去。二、练习一、用括号内所给单词的适当形式填空。1.Let's___(do)thehomeworknow.2.Everyone，___(enjoy)yourcampuslifeinourschool.3.___(walk)quickly,oryouwillbelateforschool.4._________(notrun)intheclassroom.2,5.Lucy,________(come)inandclosethedoor.二、根据汉语意思完成句子,每空一词。6.今天天气很好。我们去乡下野餐吧。Itisfinetoday.Let's_____________inthecountryside.7.杰克,别在这儿玩。你妹妹刚才睡着了。Jack,__________________here.Yoursisterfellasleepjustnow.8.继续练习,你的英语会说得更好。____________,andyouwillbemuchbetteratspeakingEnglish.WY9.我的老师说:“别玩电脑了。该上课了。”“____________onthecomputer.It'stimeforclass,”saysmyteacher.10.看那个标志。上面写着:“请勿触摸!”Lookatthesign.Itsays,“______________________________!”三、按要求完成句子,每空一词。11.Noeatinginthelibrary.(改为同义句)____________inthelibrary.12.Letthemgotothesciencelab.(改为否定句)Letthem_____________tothesciencelab.13.GodownZhongshanEastRoad.(改为否定句)____________downZhongshanEastRoad.14.Youmustn'ttakephotos.(改为祈使句)_____________________.=________________15.Youshouldgotobedearlytonight.(改为祈使句)________________________tonight.【答案】一、1.do62.enjoy3.Walk24.Don'trun5.come二、6.haveapicnic7.don'tplayaround8.Keeppractising9.Don'tplay10.Notouching三、11.Don'teat12.notgo13.Don'tgo14.Don'ttakephotos;Nophotos15.Gotobedearly2