语法讲解：利用一般现在时学习一般过去时

课件30张PPT。利用一般现在时学习一般过去时鎏仙一般时态复习: The Simple Present Tense 一般现在时The Simple Past Tense 一般过去时一般现在时1）表示事物或人物的特征或状态。 eg. He is a student.2）表示经常性或习惯性的动作。 eg. He usually gets up at 6:30 in the morning. 标志词: often, usually, on Sunday/ weekends... 一般过去时1）表示过去某个时间发生的动作或存在的状态。 eg. I got up at 6:30 yesterday. （动作） I was at home last night. （状态）2）表示过去经常性或习惯性发生的动作。 eg. He usually got up at 6:30 last year. 标志词： ①?yesterday及相关短语 昨天上午/下午/晚上 yesterday morning/afternoon/evening ②?“last + 时间状语”构成的短语 昨晚/上个月/去年春天/去年 last night/month/spring/year ③?“一段时间+ago”组成的短语 三天/四年以前 ④?“介词+ 过去时间名词”组成的短语 在1999年 在2010年12月25号上午 on the morning of December 25th, 2010three days ago/ four years agoin 1999 一般时态的句型转换: 肯定句 否定句 一般疑问句 及回答 动词be一般现在时 一般过去时He is a doctor.He was a doctor.Is he a doctor? Was he a doctor?Yes, he is. /No, he isn't.Yes, he was. /No, he wasn't.He isn't a doctor.He wasn't a doctor.(am, is, are) (was, were）He can play soccer.情态动词一般现在时 一般过去时He could play soccer.He can't play soccer.He couldn't play soccer.Can he play soccer?Could he play soccer?Yes, he can. /No, he can't.Yes, he could. /No, he could't.(can) (could）行为动词一般现在时 一般过去时 He works here.He worked here.Does he work here?Did he work here?Yes, he does./ No, he doesn't.Yes, he did./ No, he didn't.He doesn’t work here.He didn't work here.(原形/三单) (过去式)一般现在时中，实义动词的用法： 主语是第一、二人称或第三人称复数时，谓语动词用原形； 否定句：在谓语动词前 don’t； 一般疑问句：从原形中提出do至句首； 主语是第三人称单数时，谓语动词用第三人称单数形式 (+s/es)； 否定句：在三单前加doesn’t，三单变原形； 一般疑问句：从三单中提出does至句首，三单变原形。动词三单的变化： 1、一般动词后加s， 如： plays, works, makes 2、以 s, x, ch, sh, (o )结尾，后加es. 如：watches, goes 3、辅音字母+y结尾的单词,去y,加ies, 如：worries, studies一般过去时中，实义动词的用法： 主语不论人称，谓语动词一律用过去式； 否定句：在过去式前 加didn’t, 过去式变原形； 一般疑问句：从过去式中提出did至句首, 过去式变原形； 规则动词的过去式变化规则一般在词尾加- edplay→played以e结尾的，只加--d以辅音字母+y 结尾的，变y为i ,再加- ed以一个辅音字母结尾的重读闭音节，先双写这个辅音字母，再加-ed1.现在的状态 2.经常的或习惯性的动作1.过去某个时间存在的状态 2.过去经常或反复发生的动作 3.过去某个时间发生的动作I get up at 6:00 every day. He goes to school on foot. His brother is ill now.I got up at 6:30 yesterday. He went to school by bike last year. His brother was ill yesterday. 含有ＢＥ动词的句型一般过去时表示过去时间内某人某物存在的状态，性质等．eg: I was a teacher last year . She was a singer last year . They were happy last year .一般现在时表示某人某物现在的状态，性质等．eg: I am a teacher now. She is a singer. They are happy. （用 last year 改写）含实义动词的句型(主语是第一，二人称及第三人称复数）一般现 ... ...