小学英语四种时态语法讲解.pptxVIP

四种时态讲解

小学的时态分几种？一、现在进行时（四年级下）二、一般现在时（五年级上）三、一般将来时（五年级下）四、一般过去时（五年级下）

一般将来时时间轴一般过去时过去一般现在时现在现在进行时将来010203

一、一般过去时

概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。1标志词：2yesterday或以其构成的短语：yesterdaymorning(afternoon,evening)等；3由“last+一时间名词”构成的短语：lastnight,lastyear(winter,month,week)等；4由“时间段+ago”构成的短语：longlongago，amomentago,ashorttimeago,threedaysago等；5其它：justnow等6一般过去时

be动词（注意be的人称变化，单数用was，复数用were）Iwasintheclassroomyesterdaymorning．Hewasintheclassroomyesterdaymorning．Theywereintheclassroomyesterdaymorning．行为动词（动词过去式规则变化和不规则变化）Ivisitedmygrandparentsyesterday.3、基本结构：

1）动词过去式规则变化构成规则例子一般在动词原形末尾加-edlook→lookedplay→playedwork→worked以不发音的e结尾的动词加-dlike→likeddance→dancedlive→lived以辅元辅结尾的重读闭音节，双写尾字母，再加-edplan→plannedstop→stoppeddrop→dropped结尾是“辅音字母＋y”的动词，改“y”为“i”再加-edstudy→studiedworry→worriedcry→cried

2）动词过去式不规则变化要牢记：am,is-wasare-weredo-didsee-saw,say-saidgive-gaveget-gotgo-wentcome-camehave-had,eat-atetake-took,run-ran,sing-sangput-put,make-made,read-readwrite-wrote,draw-drew,drink-drank,fly-flew,ride-rodespeak-spokesweep-swept,buy-boughtswim-swam,sit-satbring—broughtcan-couldcut-cutbecome-becamebegin-begandraw-drewfeel-feltfind-foundforget-forgothear-heardkeep-keptknow-knewlearn-learnt（learned）leave-leftlet-letlose-lostmeet-metsleep-sleptteach-taughttell-toldwrite-wrotethink-though

二、一般现在时

一般现在时：一般现在时：1、概念：经常、反复发生的动作或行为及现在的某种状况。2、标志词：always,usually,often,sometimes,everyweek(day,year,month…),onSundays,etc.3、基本结构：①be动词(is/am/are)；②行为动词(基本用原形，但主语三单动词要加s/es)e.g：Iamateacher.(现在的状态)Hegoestoschooleveryday.Katieoftenhasbreakfastat7:15.Theearthmovesaroundthesun.(科学事实或真理)

一般现在时常以动词原形表示，但当主语是第三人称时，谓语动词要用第三人称单数形式，加-s/es。

动词第三人称变化规则：规则例子一般在词尾加-sPlay→playsleave→leavesswim→swims以字母s,x,ch,sh,o结尾的词加-es，读/iz/,如果动词原形词尾已有e,则只加-s。pass→passeswatch→watchesteach→tea