Unit6Don’teatinclass.SectionA(GrammarFocus-3c)Ⅰ.選句子配圖A.Don’ttalk.B.Don’teatfoodanddrink.C.Don’ttakephotos.D.Don’tdrink.答案：1~4.CABDⅡ.句型展示1.——她必須在圖書室里保持安靜嗎？——是的。—______she__________________quietinthelibrary?—Yes,she______.答案：Does;havetobe;does2.——我們能在走廊里聽音樂嗎？——不，不能。—______we____________musicinthehallways?—No,you______.3.我們不必天天來上學。We__________________cometoschooleveryday.答案：2.Can;listento;can’t3.don’thavetohaveto必須；不得不◆Doeshehavetowearauniformatschool?在學校里他必須穿校服嗎？◆Hehastohelphismothercookdinner.他得幫他媽媽做晚飯。◆Hedoesn’thavetocleantheroom.他不必打掃房間。【探究總結】haveto的用法(1)haveto為情態動詞，意為“必須，不得不”。第三人稱單數為hasto，過去時為hadto,將來時為willhaveto。(2)否定形式和疑問形式要借助do,does,did等助動詞來完成，其否定形式為don’t/doesn’t/didn’thaveto,其疑問形式為：Do/Does/Did...haveto...?(3)haveto的同義詞為must，但兩者用法不同。①haveto強調客觀需要。有人稱和時態的變化。②must強調主觀看法；mustn’t意為“禁止”。無人稱和數的變化，且只能用在一般現在時中。【學以致用】

①他今天得去看望他爺爺。He____________visithisgrandfathertoday.②今天你不必穿校服。You__________________wearyourschooluniformtoday.答案：①hasto②don’thavetoⅠ.選詞填空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.句型型轉轉換換1.Ihavetogetupearly.(改為為一一般般疑疑問問句句)______you____________getupearly?2.Hehastogoshoppingwithhismother.(改為為否否定定句句)He__________________goshoppingwithhismother.答案：1.Do;haveto2.doesn’thaveto3.Wecanwearourown