八年级英语下册：Unit 8 Transportation复习课件（北师大版八年级下）.ppt

unit8transportation 一 本周教学重点 1 must mustn t haveto don thaveto的用法 2 祈使句表示禁止 3 重点词组的学习 二 具体内容 一 1 must haveto表示某事必须做 两者表达意思一样 e g youhavetorideontheright youmustrideontheright 2 但在问句中 haveto更常见 e g doyouhavetodriveontherightsideoftheroad 3 mustn t表示做某事是错误的或违法的 没有选择的余地 意为 禁止 而don thaveto表达做某事不是必须的 我们可以选择 意为 不必 e g youmustn tparkinspacesfordisabledpeople youdon thavetohaveadriver slicensetorideabicycle readthefollowingsentences youmustn trideonthesidewalk youhavetoknowhowtostopsafely youmustalwaysremembertolockyourbike youhavetowearlight coloredclothes youmustgivewaytopedestrians youhavetohavelightsonyourbike youmustn tgiveridestootherpeople youmustcheckthebrakesandthetires youhavetoobeyalltrafficsignsandrules youmustn tdotricksonyourbike youmustwearahelmet 二 祈使句表示禁止 省略主语 以动词原形开始的句子叫祈使句 e g givemeahand please don topenthedoor readandcompletetheleafletwiththeheadingsfromthebox a rulesformotorcyclistsb rulesforcyclistc rulesforpedestriansd rulesfordrivers 课堂练习 i 用must mustn t填空 1 you checkthatyourbikeisingoodcondition 2 you rideonthesidewalk 3 you obeytrafficsigns 4 you giveridestootherpeople it sdangerous 5 you toknowhowtostopsafely 6 you givewaytopedestrians ii 完成句子 1 开车时不要打电话 don t whileyouaredriving 2 我们周日不必去上学 we gotoschoolonsundays 3 你不必打车去 you takeataxi 4 红灯亮时 你必须停车 whenthetrafficlights you yourcar 5 在环路上开车时 不必等交通灯 whenyoudrivealongthering roads you waitforthetrafficlights 6 不要在街上踢球 很危险 you inthestreet it