八年级英语上册 Unit 6 Natural disasters Grammar 课件 牛津译林版.ppt

unit6 grammarapastcontinuoustense 所学过的句子时态 一般现在时 1 经常发生或反复发生的动作 如hegetsupatsix 2 现实的情况或状态 如itisfinetoday 3 永恒的真理 如thesunrisesintheeast 一般过去时 主要表示1 过去发生的动作或存在的状态如iwenttoschoolonfoot 2 刚发生过的动作shecameinjustnow 现在进行时 如wearehavingourenglishclasstoday 一般将来时 如iamgoingto shall willvisitmyunclethisweekend 今早7 00我在吃早饭 昨晚8 00 10 00他在看电视 今天上午他写了一封信 今天上午他一直写信 iwaseatingbreakfastat7 00thismorning lastnightfrom8 00to10 00hewaswatchingtv hewrotealetterthismorning hewaswritingaletterthismorning 过去进行时的基本用法表示过去某一时刻正在进行的动作以及过去某一段时间内持续进行的动作 常与表示过去的具体时间 如 atthattime moment atthistimeyesterday at9 00lastnight from8to9yesterdayeveningthewholemorning等连用 过去进行时的句式 1 基本结构 was were v ing 2 否定式 was werenot v ingwasnot wasn twerenot weren t 3 疑问句 将was were调到主语前 你能说出下列句子的否定句 一般疑问句及肯定回答和否定回答吗 iwasrunning danielwastalkingtomillie 你能对划线部分进行提问吗 tom play football is ing lucy is read abook ing whatistomdoing whatislucydoing tom play football was ing lucy was read abook ing whatwastomdoingjustnow whatwaslucydoingat2 30p myesterday they watching tvfrom6 8 were thetwins think were ing whatweretheydoingfrom6 8lastnight whatwerethetwinsdoingatthistimeyesterday lastnight 有时为了句子表达的需要 我们可以用复合句来表达过去进行时 如昨晚当我到家的时候 妈妈和爸爸正在看电视 myparentswerewatchingtvwheniarrivedhomelastnight 刚才当老师走进教室的时候 学生们正在读书 studentswerereadingwhentheteachercameinjustnow 在这些句子中 when引导的句子表过去的某一个具体的时间 when从句用一般过去时 而它的主句用过去进行时 但是若强调某个动作正在进行中时 又发生了别的动作 用when从句 when从句必用过去进行时 主句用一般过去时 表示在when从句正进行期间又发生了主句的动作 此时 when while 表时间段 如当学生们正在读书时 老师走进了教室 昨晚当爸爸和妈妈正在看电视时 我到家了 when whilethestudentswerereadingbooks theteachercamein when whilemyparentswerewatchingtv iarrivedhome 若主 从句两个延续动作同时进行 用while 则主句与从句都用进行时 此时 while译为 而 一边 一边 如 hewasreadingthenewspaperwhileiwasstudying beibeiwassingingwhilepingpingwasdancing shewasdoingherhomeworkwhileshewaslisteningtomusic peoplewererunningwildlywhilepiecesofglassandbrickswerefallingdown suzywasmakingasnowmanwhilekittywasstandingbesideher 英语中 动词按其动作发生的方式 动作发生过程的长短 可分为延续性动词和终止性动词 延续性动词表示能够延续的动作 这种动作可以延续下去或产生持久影响 如 learn work stand lie know walk keep have wait watch sing read sleep live stay like 等 终止性动词也称非延续性动词 瞬间动词或短暂性动词 表示不能延续的动作 指动作在很短时间内完成 这种动作发生后立即结束 如open close finish begin come go arrive reach getto leave move borrow buy die join become return 等 1 what yourbrother do atnineo clocklastnight 2 they listen tomusicatthattime 3 whenisawhim he search theinternet 4 they discuss aprobleminthemeetingroomatthistimeyesterday 5 amy visit thesciencemuseumfrom9 00a m to11 00a m yesterday was doing werelistening wassearching werediscussing was visiting 巩固练习mywalletdroppedontheground iwasrunning 2 iwasfallingasleep therewasaloudknockonthedoor 3 hewasreading anearthquakestarted 4 werethestudentslisteningtotheteachercarefully theteacherwasgivingalesson 5 thetelephonerang ibecamenervous while when while while when while when completetheconversationwiththecorrectformsoftheverbsinbrackets daniel itriedtocallyoulastnightbutyourphonelinewasbusy what you do amy when you phone me daniel itwasaboutseven were doing did phone amy oh i talk tomillieonthephone i tell heraboutmytriptoshenzhen she plan togotherewithherfamilyduringtheholiday why you call me wastalking wastelling wasplanning did call daniel i do mymathshomeworkandi notunderstand onequestion butnevermind i ask simonalready wasdoing didn tunderstand haveasked completethequestionsandanswers usingthepastcontinuoustense 1 wasmisslu make testpapersat1 30pm yes 2 mrhu sassistants do anexperimentatlunchtime no making shewas were doing theyweren t 过去进行时与一般过去时的区别过去进行时着重描述当时正在进行的动作 它的特点是 未完成 强调过程 一般过去时表示一个业已完成的动作 表示动作发生过 而且已经结束了 强调结果 mary adresswhenshecutherfinger a madeb ismakingc wasmakingd makes wasmaking表示正在做衣服的过程 如用made则表示这一动作已结束 做衣服的动作已结束与cutherfinger就没有联系 2 he write aletter thenwenttobed wrote wrote表示动作已结束 做另一件事 如用waswriting就与wenttobed在逻辑上相矛盾 二 过去进行时侧重表示动作的延续 一般过去时表示过去某时发生过某事 侧重说明事实 he allnightlastnight 生动的描写 他一直写 he somethinglastnight 说明他写了 的事实 waswriting wrote 注 下列几类动词通常不用于进行时 表示状态的动词be 感官动词 feel hear look smell taste等 表示思维或心理状态的动词 believe forget consider 认为 know remember hope wish want等 表示所属关系的动词 belong have own hold 容纳 等