1祈使句定义：说话人对对方的叮嘱、劝告、请求或命令等Stoprunning!Behappy!Pleasedanceforus!Let’sdoexercise!祈使句省______，主语you常_______；动词______谓语当，句首加_______否定变；朗读应当用______，句末常标_________。祈使句之——肯定句①Do型(以动原开头)Sitdown!坐下!Standup!站起来!②Be型(以be开头)Bequiet!安静!③Let型(以let开头)Letmehelpyou.让我帮助你!Let’sgo.我们走吧!祈使句之——否定句①Don’t型Don’t＋动原Don’tgothere,please.Don’tbelate.②Let’s型Let’snot…/Don’tlet…Let’snothavearest.Don’tletthedogcomein.③No型No＋名词或(V-ing)Nophotos!Nosmoking!祈使句之—反义疑问句①肯定祈使句-----will/won’tyou?Listentomecarefully,will/won’tyou?②否定祈使句-----willyou?Don’teatinthereadingroom,willyou?③Let’s---shallwe?Letus---willyou?Let’sgofishing,shallwe?Letusgotothepark,willyou?难点语法突破（二）2特殊句型①“祈使句＋and＋结果的陈述句”用来叙述肯定的条件。Hurryupandyou’llcatchthetrain.＝Ifyouhurryup,you’llcatchthetrain.②“祈使句＋or(else)＋结果的陈述句”叙述否定的条件Hurryup,oryou’llmissthetrain．＝Ifyoudon’thurryup,you’llmissthetrain.此时祈使句相当一个if引导的条件状语从句。重要交际用语Takeyourtime!别急。Pardonme？对不起，请再说一遍Takeiteasy!别着急。Goahead!朝前走；去做吧！(鼓励对方做某事)Don’tmentionit!不用客气！(对别人感谢的回答)Cheerup!振作起来！牛刀小试用括号内所给动词的适当形式填空1．________(not,be)lateforschool.2．____________(not,speak)withyourmouthfulloffood.3．___________(not,leave)yourhomeworkfortomorrow,Tom.4．________(not,let)thebabyeattoomuch.Followme!3小试牛刀一、将以下祈使句改为否定式：1．Comehereearly._________________________2．Askhim._________________________3．Pleasewaitforher._________________________4．Readthebookcarefully._____________________5．Situnderthetree,please.____________________6．Let’sgotheretogether.___________________二、选择最佳答案填空：1．Ifyouaretired,______arest.A．haveB．havingC．tohaveD．had2．______mego.Itisveryimportantforme.A．DoletB．letdoC．DoingletD．Todolet3．Heisnothonest.______believehim.A．NotB．Don’tC．TonotD．Notto4．Ifyouwanttostay,letmeknow,______?A．willyouB．shallweC．doyouD．dowe5．Nevercomelateagain,______?A．willyouB．won’tC．doyouD．doeshe6．_____upearlytomorrow,oryoucan’tcatchthetrain.A．GettingB．GetC．TogetD．Got7．_____inthestreet.It’sdangerous.A．NotplayB．NottoplayC．Don’tplayD．Don’ttoplay8．Please______mesomemoney,willyou?A．lendB．lendingC．tolendD．belend9．Thefilmisabouttobegin.Please______seated.A．beB．areC．isD．being10．_____theboxes.Youmayusethemlater.A．KeepB．KeepingC．TokeepD．Kept下节精彩预告：教材进行时
