高中英语 Module 1 Small Talk Section 3 Grammar课件 外研版选修6.ppt

section grammar 探究语法精要 didn tneedtodo与needn thavedone 一 didn tneedtodo和needn thavedonedidn tneedtodo和needn thavedone两结构都有 过去不必做某事 之意 但didn tneedtodo是指 过去没必要做 实际上也没有做 而needn thavedone则表示 过去虽然没必要做 但已经做了某事 ididn tneedtobuyagiftformysonbecauseialreadyhadone 我不需要为儿子买礼物 因为我已经有一份了 ididn tneedtocleanthewindow mybrotherdidit 我没有必要擦窗户 我哥哥擦了 ineedn thavetoldhimaboutthenewsbecausehehadknownaboutit 我没必要告诉他这个消息 因为他已经知道了 2 表示对过去事情的抱怨或后悔 oughttohavedone本来有义务做而没有做某事shouldhavedone本来应该做而未做某事couldhavedone本来能够做而没有做某事needhavedone本来需要做但未做某事needn thavedone本来没必要做但做了某事 yououghttohavecleanedtheroom afterall youwereondutyyesterday 你本应该清理房间 毕竟 昨天该你值日 youshouldhavebeenmorecarefuljustnow 你刚才应该更小心些 oh mom youneedn thavepreparedsomuchfood dadanddianawillnotcomebackforsupper 噢 妈妈 你本不必做这么多饭 爸爸和戴安娜不回家吃晚饭了 课时语法专练 单句语法填空1 itisobviousthatthegardenneeds water 答案 watering tobewatered2 wedon tneed get intoanargumentoverthis 答案 toget3 itissaidthatheneednot take theexam 答案 take 4 adogneeds take outforawalkeveryday 答案 taking tobetaken5 iwasthefirsttogothere i go theresoearly 答案 needn thavegone6 iofferedtohelphimwiththehouseworkandthenhetoldmehehadfinished i do that 答案 needn thavedone 7 myamericanfriendtomspokegoodchinese soididn tneed translate thespeechforhim 答案 totranslate8 mark hurry afterdrivingattopspeed hearrivedhalfanhourearly 答案 needn thavehurried 完成句子1 i 不需要打出租车 it swithinwalkingdistance sowewalkedthere 答案 didn tneedtotakeataxi2 itturnedouttobeasmallhouseparty we 没必要盛装打扮 答案 needn thavedressedup3 they 不需要做 itthemselves sotheywenthomeinadvance 答案 didn tneedtodo 4 we 没必要如此匆忙 thereisstillanhourleft 答案 needn thavesohurried5 needhe 完成作业 first 答案