【金榜学案】六级英语下册 Unit 6 Dont eat in class Section A(Grammar Focus3c)课件 鲁教五四制

Unit6Don’teatinclass.SectionA(GrammarFocus-3c)Ⅰ.选句子配图A.Don’ttalk.B.Don’teatfoodanddrink.C.Don’ttakephotos.D.Don’tdrink.答案：1~4.CABDⅡ.句型展示1.——她必须在图书室里保持安静吗？——是的。—______she__________________quietinthelibrary?—Yes,she______.答案：Does;havetobe;does2.——我们能在走廊里听音乐吗？——不，不能。—______we____________musicinthehallways?—No,you______.3.我们不必天天来上学。We__________________cometoschooleveryday.答案：2.Can;listento;can’t3.don’thavetohaveto必须；不得不◆Doeshehavetowearauniformatschool?在学校里他必须穿校服吗？◆Hehastohelphismothercookdinner.他得帮他妈妈做晚饭。◆Hedoesn’thavetocleantheroom.他不必打扫房间。【探究总结】haveto的用法(1)haveto为情态动词，意为“必须，不得不”。第三人称单数为hasto，过去时为hadto,将来时为willhaveto。(2)否定形式和疑问形式要借助do,does,did等助动词来完成，其否定形式为don’t/doesn’t/didn’thaveto,其疑问形式为：Do/Does/Did...haveto...?(3)haveto的同义词为must，但两者用法不同。①haveto强调客观需要。有人称和时态的变化。②must强调主观看法；mustn’t意为“禁止”。无人称和数的变化，且只能用在一般现在时中。【学以致用】

①他今天得去看望他爷爷。He____________visithisgrandfathertoday.②今天你不必穿校服。You__________________wearyourschooluniformtoday.答案：①hasto②don’thavetoⅠ.选词填空quiet,eat,can’t,uniform,late1.Don’t______anythinginclass.2.Don’ttalkloudlyinthelibrary.Pleasebe______.3.Don’tgetup______onweekdays.答案：1.eat2.quiet3.late4.We______listentomusicintheclassroombutwecanlistentoitinthemusicroom.5.Asastudent,youhavetowearyourschool______.答案：4.can’t5.uniformⅡ.句型型转转换换1.Ihavetogetupearly.(改为为一一般般疑疑问问句句)______you____________getupearly?2.Hehastogoshoppingwithhismother.(改为为否否定定句句)He__________________goshoppingwithhismother.答案：1.Do;haveto2.doesn’thaveto3.Wecanwearourown