Bunit4一般过去时的用法.ppt

一般过去时的用法：,1.表示过去的动作或状态，常和明确的过去时间状语连用，如：yesterday, last week, three days ago, in 1998等，或与由when引导的从句。 eg. I saw him yesterday. She bought the bike two years ago. He was there just now. Where did you live when you were young?,2.也可以表示过去某一段时间内经常或反复出现的动作。句子中常带有every day, often, usually, always, sometimes 等时间状语。 When I studied in the university, I read aloud every morning. In the past few years, I usually went touring during my summer vocations.,一般过去时的形式: 动词 be: 第一人称单数和第三人称单数用 was, 其余的人称一律用 were。 动词 have: 一律用 had, 没有人称和数的变化。 行为动词：一律用过去式，没有人称和数的变化，行为动词的过去式有两类，一类是规则动词，另一类是不规则动词。,动词过去时规则变化 1 直接加ed worked helped 2 以不发音的e结尾的+d hoped liked 3 以辅音字母+y结尾的，变y为i加ed Studied tried 4 以重读闭音节结尾的，双写最后的辅音字母+ed stopped planned referred,不规则变化 关于规则动词过去式的变化（在词尾加ed）大家已经了如指掌了，但对那些不规则动词的过去式的变化，记忆起来总是有一定难度这里教给大家一些“妙招”不妨一试哦！ 1.中间去e末尾加t如： keepkept feelfelt sleepslept sweepswept 2结尾d变t如： buildbuilt lendlent sendsent spendspent 3.遇见i改为a如： ringrang sitsat drinkdrank singsang swimswam beginbegan givegave,4.骑（马） 开（车） 写（字）把i变o如： riderode drivedrove writewrote 5“想”“买”“带来”“打仗”ought换上如： thinkthought buybought bringbrought fightfought 6“教书”“抓住”aught切莫忘 如： teachtaught catchcaught 7.owaw 该为ew是新时尚，如： knowknew growgrew throwthrew drawdrew 8.“放”“让”“读”过去式与原形一个样，如： putput letlet readreadred,练习一：选用恰当的时态，用括号内动词的正确形式填空。 Last year Mr. Smith _ (go ) to China and Japan. He _ (have) a wonderful time. He _ (do) a lot of different things and _ (talk) to a great number of different people. He _ (eat) Chinese and Japanese food and _ (visit) a lot of interesting places. When he _ (go) back to England, he _ (be) very tired.,练习二：句型转换：写出下列各句的否定形式（在可能的地方用紧缩形式）， 1.Professor Jennings taught them English in 1990. 2.Tom had a wonderful time in xian. 3.Mary found her keys in her bedroom. 4.Xiao Wangs parents lived in Shanghai ten years ago. 5.Jane went to the Great wall two or three times.,练习三：用词的适当形式填空 1. He ate some bread and _ (drink) some milk. 2. _ he _ (finish) his homework last night? 3. I_(be) tired yesterday. 4. I _(gain ) Arts degree last year. 5. What _ you _ (do) at eight oclock last night? 6. My grandfather _ (leave) Hongkong for New York in 1998. 7. What _ you _ (do) this time yesterday?,练习四：单选 ( )1. _ you _ at six oclock yesterday? A. Do ,get up B. Did, get up C. Do, got up D. Did, got up ( )2. What did you see _? A. now B. every day C. since 1990 D. just now ( )3.He went into the room and _ the door. A. lock B. locking C. locks D. locked ( )4. -What _ you _ last week? - I bought a bag. A. did ,buy B. did , bought C. do, buy D. do, bought ( )5. -_ he _ his lunch? - Yes, he did. A. Have ,had B. Had, has C. Did, have D. Did, had,练习五：用词的适当形式填空 1. Last week I _ (buy) a new bike. 2. He _ (be) here just now. 3. He _ (not find ) his key last night. 4. My father _ (drink) a lot of wine yesterday. 5. _ you _ (finish) your homework yesterday? 6. I _ (eat) some eggs and bread in this morning. 7. Her mother _ (not give) the g