初中时态练习.pptx

一般现在时的定义: 1.表经常发生的事情、存在的动作或状态eg She sings with the band Crazy Boy.2.表内心活动感情等eg I dont think you are right.3.描述客观真理eg Birds fly in the sky.4.表预定的行为eg The train leaves at 9. 一般现在时的构成: 动词肯定句: I am.../ You/We/They are / He/She/It is 否定句：I am not.../You/We/They are not/He/She/It is not 一般疑问句：Are you/they…?/Is he/she/it…? 一般现在时用行为动词的原形，主语是he, she, it这些第三人称单数时，动词要加s或es． ;一般过去时的定义：一般过去时是表示过去经常或偶然发生的动作或存在的状态的时态． 1.表过去发生的事情或存在的状态eg Suddenly,the clouds cleared and the rain stopped.2.表过去经常发生的事情eg I was very thin in my childhood.3.带有确定的过去的时间状语eg Did you meet yesterday? He left just now. ?一般过???时的构成： 动词肯定： I was.../He/She/It was.../ We/You/They were... 句否定句：I was not.../He/She/It was not.../We/You/They were not... 一般过去时用动词的过去式动词的过去式一般都加ed，如work worked．结尾是e的只加d，如like liked.末尾只有一个辅音字母的重读闭音节要双写这个字母再加ed,如stop stopped，以辅音字母加y结尾的，先变y为i再加ed,如study studied．另外还有一些不规则的变化，课本后边的单词表上有注释．句中含有yesterday; last year（last + 具体时间）; two days ago（一段时间 + ago）; just now; this morning; in 2008（in + 过去的年代）; the other day; over the weekend等时间状语时，谓语动词用一般过去时；;（三）一般将来时的定义：一般将来时是表示将来发生的动作或存在的状态的时态． 1.要在将来的某个时间内发生，是“纯粹的将来动作”。eg I shall / will not be free tomorrow.2.表说话人的意图、打算或某种可能性eg Who is going to speak first? 3.按计划要发生的动作或命令他人做某事eg The new bridge is to open to traffic in 3 days. 一般将来时的构成: 人称肯定句: 主语+ will … 否定句：主语+will not… 一般将来时由助动词（will, shall）＋动词原形构成,shall主要用于以第一人称(I,We)为主语的疑问句中．句中含有tomorrow; next week（next +具体时间）; in two hours（in +一段时间）; (how) soon; from now on; 10 years from now（一段时间+from now）; in the future; in 2012（in +将来的年代）; by (the end of) next month（by+将来时间）; for the weekend; this afternoon; this evening; tonight; this weekend等时间状语时，谓语动词用一般将来时 ;（五）过去进行时的定义：过去进行时是表示在过去某一时刻或某段时间内正在进行的动作时态． 1.表示在过去某时刻正在进行的动作eg At this moment yesterday, I was packing for camp.2.用于故事的开头，交代故事发生的背景情况eg One night, he was typing in his study . Suddenly , a man broke …3.表示在过去的未来时间要发生的动作eg We left there when its getting dark. 过去进行时的构成： 过去进行时是由系动词的过去式（was / were）＋现在分词（动词加ing）构成的． 如I was talking, Was I ta