四年级下册一般过去时态(一过)复习进程.ppt
四年级下册一般过去时态(一过)注:一般过去时常和表示过去的时间连用;如:yesterday(昨天),then(那时),last.(last week,last year)时标一般一般过去去时:含有含有be动词的一般的一般过去去时变否否定句。定句。1、I was thin then.(变否)否)I was not thin then.2、These boys were naughty then.(变否)否)These boys were not naughty then.肯定句肯定句变否定句:主否定句:主+was/were not+其他其他.was not=wasnt were not=werent 含有含有Be动词动词的的肯定句肯定句变变一般疑一般疑问问句句:1、I was thin then.(变变疑疑)Were you thin then?2、They were cute then.(变变疑疑)Were they cute then?含有含有Be动词动词的肯定句的肯定句变变一般疑一般疑问问句:句:1.提:提:Be 提前提前(大写大写)。2.变变:人称人称变变化(化(I/we变变you,my,our 变变your)。)。3.问问号号:“.”变变“?”。二、含有二、含有实义动词实义动词的一般的一般过过去去时时,描述描述过过去去发发生的事:生的事:eg:I cooked noodles yesterday.We rowed a boat on the lake.She washed clothes yesterday.结结构:主构:主语语+动词过动词过去式去式+其他其他.1.He was a naughty boy then.(变否)He was not a naughty boy then.2.They can swim.(变否)They can not swim.如何将含有如何将含有如何将含有如何将含有实义动词实义动词的一般的一般的一般的一般过过去去去去时时的的的的肯定句肯定句肯定句肯定句变变否否定句定句定句定句?含有含有 bebe动词或者情或者情态单词cancan的肯定句的肯定句 ,在在bebe或或cancan后后+not+not 变否定句:变否定句:I helped mum.(变否)变否)I did not/didnt help mum.无无be 无情,必加助(无情,必加助(do-did)变否变否助动词后助动词后加加not,放动词前,放动词前,动词记得变原型。动词记得变原型。变一般疑问句:变一般疑问句:He helped mum yeaterday.(变一般疑问句)变一般疑问句)Did he help mum yesterday?口诀:口诀:1提(提(Did)2变(变人称变(变人称 I、we变变you;my、our变变your)3?(?(.变变?)无无be 无情,必加助(无情,必加助(do-did)变疑句首加变疑句首加Did动词记得变原型。动词记得变原型。注意:关于注意:关于did,我,我们需要特需要特别注意注意1.作作为助助动词 eg:He didnt watch TV yesterday.2.实义动词:做:做.eg:My mother did the housework last night.I did my homework yesterday.动词过动词过去式去式规则规则:1.一般一般动词动词,词词尾尾+ed,如如wash-washed,play-played,watch-watched2.以不以不发发音音e结结尾的尾的动词动词,词词尾尾+d,如如love-loved,dance-danced,phone-phoned3.以以辅辅音字母音字母+y结结尾的,尾的,把把y变变i,再,再+ed,如如 carry-carried4.以以元元音字母音字母+y结结尾的,尾的,词词尾尾+ed,(元音字母:(元音字母:a e i o u)如如 stay-stayed 5.以重以重读闭读闭音音节词结节词结尾,末尾只有一个尾,末尾只有一个辅辅音音 结结尾,尾,双写双写词词尾尾辅辅音字母,再音字母,再+ed如,如,stop-stopped,travel-travelled6.不不规则动词变规则动词变化化如如do/does-did,go-went,have-had,see-saw,eat-ate,read-read,make-made,find-found,buy-bought,come-came run-ran,swim-swam,drink-drank,take-took,sing-sang此此课件下件下载可自行可自行编辑修改,修改,仅供参考!供参考!感感谢您的支持,我您的支持,我们努力做得更好!努力做得更好!谢谢