3.结构形式：（1）当疑问词在句中作主语时,用“疑问词+was/were+其他？”或“疑问词+动词过去式+其他？”.①—WhowasyourEnglishteacherlastyear?去年谁是你的英语老师？—MissYang.杨老师.②—Whowatchedthebasketballgame?谁看了篮球比赛？—Tomdid.汤姆看了.（2）当疑问词作宾语或状语时,用“疑问词+was/were+主语+其他？”或“疑问词+did+主语+动词原形+其他？”.①—Whenwasheathome?他何时在家的？—Yesterdaymorning.昨天上午.②—Whodidyousee?你看见谁了？—Tom.汤姆.几种时态的辨析种类意义现阶段经常性或习惯性动作；目前的状态；客观真理.一般现在时现在进行时说话时或现阶段正在进行的动作过去发生的动作；过去存在的状态.一般过去时种类时间标志词often,sometimes,usually,always,twiceamonth,onSundays,everyday/week/month/yearnow,atpresent,atthemoment,look,listenjustnow,…ago,in1980,lastnight/week/year一般现在时现在进行时一般过去时一、模拟例子,写出下列单词的三种形式.例：dodoes(第三人称单数)doing(现在分词)did(过去式)1.have___________________2.go___________________3.see___________________hashavinghadgoesgoingwentseesseeingsaw4.get___________________5.come___________________6.ride___________________7.feed___________________8.take___________________9.run___________________10.swim_____________________getsgettinggotcomescomingcameridesridingrodefeedsfeedingfedtakestakingtookrunsrunningranswimsswimmingswam*ReviewofUnit12v.扎营；搭帐篷n.湖；湖泊n.海滩；沙滩n.羊；绵羊prep.作为；当作adj.自然的camplakebeachsheepasnaturaln.游客；访问者adj.疲倦的；疲劳的v.停留；待adv.离开；远离n.老鼠；耗子adj.幼小的n.婴儿visitortiredstayawaymousebabyv.呼叫；喊叫n.语言v.飞n.风筝adj.adv.高的（地）adv.以前shoutlanguageflykitehighagon.印度n.月亮n.惊奇；惊讶v.使吃惊n.蛇v.移动v.开始；着手Indiamoonsurprisesnakemovestartv.跳；跃v.弄醒；醒prep.到……里面；进入n.森林n.耳朵jumpwakeintoforesteargoboatingcampbythelakegotothebeac