sectionA-2 (3)

WhatwereyoudoingwhentheUFOarrived Period2SectionA2a 2c NewWords boughtlandgottakeoffwhile buy的过去式着陆get的过去式起飞当 的时候 alien analien aliens Let swatchavideo Howmanykindsofalienscanyoufind WhathappenedtoTed Whatdidhesee Listenandnumberthestatementsintheorderyouhearthem 1 2 3 4 5 1 Theboywaswalkingdownthestreet aUFOlanded 2 Thegirlwasshopping shesawthealiengetout 3 thealienwasbuyingasouvenir thegirlcalledthepolice 4 thealienwasvisitingthemuseum theboycalledtheTVstation when when 2b Listenagain Completethefollowingsentenceswith when or while While While Reporter So canyoutellmewhatyousawheretoday Boy Well IwaswalkingdownCenterStreetwhenaUFOlanded Reporter Wherediditland Boy Righthere Reporter Sowhathappenednext Girl AnaliengotoutoftheUFO Reporter Whatwereyoudoing Girl WhenthealiengotoutoftheUFOIwasshopping Reporter Thenwhathappened Tapescript Boy Well Thenthealienwentintoastore doyouseethestoreoverthere andboughtasouvenir Girl ThenitvisitedtheMuseumofFlightonGreenStreet Reporter So whatdidyoudo Girl Whileitwasbuyingasouvenir Icalledthepolice Boy Andwhileitwasvisitingthemuseum IcalledtheTVstation Reporter Sowhathappenednext 纪念品 TheboywasplayingbasketballwhentheUFOarrived WhatwashedoingwhentheUFOarrived WhilehewasplayingbasketballtheUFOarrived WhatwasshedoingwhentheUFOarrived ShewasskatingwhentheUFOarrived WhileshewasskatingtheUFOarrived WhatweretheydoingwhentheUFOarrived TheywereplayingvolleyballwhentheUFOarrived WhiletheywereplayingvolleyballtheUFOarrived 比较 when and while 2 WhentheUFOlanded theboywaswalkingdownthestreet Whiletheboywaswalkingdownthestreet theUFOlanded 1 Whenthealiengotout thegirlwasshopping Whilethegirlwasshopping thealiengotout 以when和while引导的时间状语从句 1 延续性动词和非延续性动词延续性动词指动作可以延续一段时间 而不是瞬间结束 如 work study drink eat等 非延续性动词指动作极为短暂 瞬间结束 如 start begin hit jump knock等 2 在本单元中 出现了以when和while引导的时间状语从句 when表示 当 的时候 从句中既可用延续性动词 又可用非延续性动词 这些动词既可以表示动作 又可表示状态 从句中的动作既可和主句的动作同时发生 又可在主句的动作之前或之后发生 如 MarywashavingdinnerwhenIsawher Theboywasstillsleepingwhenhismothergothomeyesterdaymorning while表示 在 的时候 在 期间 它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中 While从句中必须是表示动作或状态的延续性动词 如 TheweatherwasfinewhilewewereinBeijing ShecalledwhileIwasout 如果主句的动作在从句的动作过程中发生 从句常用进行时 如 Whilewewereswimmingsomeonestoleourclothes Don ttalksoloudwhileothersareworking 总结 1 when可指时间点 又可指时间段 从句中可用延续性动词 也可用非延续性动词 2 while总是指一个时间段 从句中必须用延续性动词 Iwasinfrontofthelibrary infrontof 在 前面 指一物体在另一物体的前面 e g Thereisatreeinfrontoftheclassroom inthefrontof 在 前部 指某物体处在某个地方内的前部 e g Thereisablackboardinthefrontoftheclassroom LanguagePoints talkwithapoliceman rideabike giveareport takephotos A WhatwasthegirldoingwhentheUFOtookoff B Whilethegirlwas C WhentheUFOtookoff themanwas Groupwork A WhatwasthegirldoingwhentheUFOtookoff B Whilethegirlwaseatingice cream theUFOtookoff C WhentheUFOtookoffthemanwastakingphotos D Whiletheboywasriding theUFOtookoff E Whilethewomanwastalkingtothepolice theUFOtookoff 2c Groupwork takeoff1 脱下e g Pleasetakeoffyourcoat It swarmintheroom 2 起飞 过去进行时 构成 用法 was were v ing 表示在过去某一时刻或某一段时间内正在进行或发生的动作 时间状语 atthattimeatthistimeyesterday last at o clockyesterday last whensbdidsth 过去进行时 Summary Exercises Choose when or while tofillintheblanks 1 Iwaswalkinginthestreet theaccidenthappened 2 youhaveameeting youshouldturnedoffyourmobilephone 3 youhavePEclass youshouldwearsportsshoes 4 Iwasdoingmyhomework thetelephonerang 5 itwasraining theplanetookoff 6 theteacherwasspeakingtoclass Nickstoodupsuddenly when when when while While While Exercises 7 He draw ateightyesterdayevening 8 Thetwins shop whentheirfriend see themy