UNIT 4 TOPIC 2 Section A 课件2.ppt

1、UNIT 4 Our World,TOPIC 2 How can we protect ourselves from the earthquake?,Section A,一般过去时,一般过去时 【知识精粹】： 表示过去存在的状态或过去的动作，要用一般过去时，在句中常常出现过去的词。如：just now, right now, a moment ago, yesterday, the day before yesterday, last month, last year等。,1.一般过去时是由动词的过去式构成的，过去式即动词的ed形式。 (1)一般情况下在词尾加ed。 在元音和浊辅音后读/d/。

2、如： staystayed climbclimbed 在清辅音后读/t/。如： workworked looklooked helphelped (2)以e结尾的动词加d，读音同上。 likeliked livelived hopehoped,(3)以辅音字母加y结尾的动词去y加ied，读/id/。如：studystudied trytried carrycarried (4)以重音闭音节结尾，末尾只有一个辅音字母的动词，要双写末尾的辅音字母，再加ed。 读音同上。如：jogjogged stopstopped begbegged,(5)动词的过去式有一些是不规则的，如： bewas/were

3、 becomebecame beginbegan blowblew breakbroke bringbrought buildbuilt burnburnt buybought catchcaught comecame cutcut dodid drawdrew drinkdrank,eatate fallfell fightfought flyflew forgetforgot sitsat sleepslept speakspoke spellspelt swimswam swingswung taketook teachtaught telltold thinkthought throw

4、threw wearwore winwon writewrote getgot givegave,growgrew havehad hearheard holdheld keepkept knowknew learnlearnt leaveleft loselost makemade meanmeant meetmet putput readread riderode ringrang runran saysaid seesaw shakeshook showshowed singsang,2.一般过去时的运用 (1) be动词变成was，were，其中 am，is was，are were。

5、 (2) 行为动词一般加-ed，没有人称、 单复数之分。 (3) 行为动词变成问句和否定句时将 do/does did，同时动词用原形。,【例题点睛】： How _ you _ there? By bus. A. did；went B. did；go C. do；goes,【例题点睛】： 在过去分词一般疑问句中，句首do变为did，句子中的动词用原形。,【答案】： How did you go there? By bus. A. did；went B. did；go C. do；goes,I went swimming last Sunday.,Brighton 布莱顿,Last summer

6、 I visited to Brighton.,Last night I played the piano.,I had a picnic with my family last week.,Practice,1)- What _ you _ yesterday? - I _ my Mom at home.,2) I _ the football last Sunday afternoon. 3) We _ to school Last Monday. 4)I _ a friend last month.,did,do,helped,played,went,visited,Practice,5) - What did you do yesterday? - I _ basketball on the playground. A. play B. played C. plai