七年级下册一般现在时态、现在进行时态、一般过去时态三种时态综合讲解公开课.pptxVIP

英语时态时态Tense 在英语中，不同时间发生的动作或存在的状态要用不同的动词形式来表现。重点掌握 每种时态的概念、信息词、结构、句式变化、以及某些时态间的相互区别现在进行时：现在正在进行的动作 (The Present Continuous Tense)时 态经常或习惯性的动作或存在的状态。一般现在时：(The Simple Present Tense)过去某个时间或时间段发生的动作或存在的状态。一般过去时：(The Simple Past Tense) now , Look! Listen! at this time Where is …? Don’t talk! It’s 8:00am.现在进行时： always , usually, often, sometimes ,seldom, never, every day, every… ,three times a day一般现在时:last night, last, two days ago, …ago,in +过去的年份,just now =a moment ago, yesterday, yesterday morning 一般过去时:各时态常用的信息词判断下列信息词是属于哪种时态 last night now every day Look! yesterday often Listen! two years ago alwaysin 1897 three times a week 一般现在时一般过去时现在进行时A.现在进行时B.一般现在时C.一般过去时小小测试判断时态形式：He always likes playing the piano.( )We are having an English classes now.( )They often go home late.( )Lucy danced the disco at the party last night.( )I liked go to the zoo when I was young.( )Look! They are playing football.( )She was born in 1990.( )I lost much money last night.（ ）BABCCBAC改一般疑问句的方法：①首先看有无be动词，如果有，将be提到句首并大写，句末打问号.②如果没有be动词，看原句的动词形式来决定借用助动词do/does/did,并且行为动词要还原。V-原形V-s/esV-ed(过去式)+动词原形…?改否定句的方法：①首先看有无be动词，如果有，在be 动词后面加not.②如果没有be 动词，看原句的动词形式来决定借用助动词do/does/did,并在后面加not,并且行为动词要还原。主语+don’t/doesn’t/didn’t+动词原形Do…Does…Did…①直接加-ing.②重读辅元辅，双写尾字母加-ing.③以e 结尾去e加-ing .现在分词的构成：①直接加-s.②以s, x, ch, sh, o结尾加-es.③以“辅音+y “结尾变y 为i再加-es.动词第三人称单数的构成：①直接加-ed.②以e结尾只加d.③重读辅元辅，双写尾字母再加-ed.④以“辅音+y”结尾变y 为i 再加-ed.过去式的构成：词形转换现在分词过去式第三人称单数need-stop-hope-play-try-plan-visit-like- needed stopped hoped played tried planned visited liked have - look - begin- use- shop- get- dance- study-study-finish-have-go-do-play-watch-give- Studies finishes has goes does plays watches gives having looking beginning using shopping getting dancing studying 过去式的不规则变化 see - send- sit - take- think- will - tell - begin - teach - catch - blew bought could came did ate fell found forgot got give- go - have- know- learn - make - meet - rea