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  • [时态综合] 时态since 和for 的比较 发表日期:2021-08-14

    Since 用来说明动作起始时间,for用来说明动作延续时间长度。 I have lived here for more than twenty years. I have lived here since I was born.. My aunt has worked in a clinic since 1949. Some new oilfields have been opened up since 1976. I ha...

  • [时态综合] 六种常用时态知识点 发表日期:2021-08-14

    一、一般现在时 (be;do/does) 1.概念:表示现在发生的动作、情况、状态和特征。经常性、习惯性动作。 标志词:often, sometimes, usually, always, occasionally等和时间状语如 in the evening, at night, twice a month, on Sundays, every day/week/month/...

  • [时态综合] 如何辨别英语时态 发表日期:2021-08-14

    一、根据时间状语与时态的对应关系 动词特定的时态常常与特定的时间状语联系在一起,如由this time yesterday可知用过去进行时;由so far, in the past three years, till now可知要用完成时,等等。 1、句中含有yesterday; last year(last + 具体时间); t...

  • [时态综合] 不规则动词的变化规律 发表日期:2020-04-20

    有些的动词过去式和过去分词的构成属于规则变化,但有些变化比较特殊,不按规则进行,这就需要大家在学习中特别注意。系统的不规则过去式和过去分词请查阅一本好的词典,下面给大家列举一些比较常用的例子。为帮助大家记忆,现把常用的不规则动词分为几个类...

  • [时态综合] 英语中的十六种时态 发表日期:2018-08-28

    (1)一般现在时 基本形式(以do为例): 第三人称单数:does(主语为非第三人称单数); 肯定句:主语+动词原形+其他; He works for us. 否定句:主语+don't/doesn't+动词原形+其他; He doesn't work for us. 一般疑问句:Do/Does+主语+动词原形+...

  • [时态综合] 英语的16种时态 发表日期:2014-03-26

    英语共有十六种时态,其表现形式如下(以study为例) 一般时 进行时 完成时 完成进行时 现在 study be studying have studied have been studying 过去 studied be studying had studied had been studying 将来 will study wil be studying will have studied...

  • [时态综合] 时态与时间状语 发表日期:2013-02-27

    时间状语 一般现在时 every , sometimes, at , on Sunday, 一般过去时 yesterday, last week, an hour ago, the other day, in 1982, just now 一般将来时 next, tomorrow, in+时间, 现在完成时 for, since, so far, ever, never, just, yet, till/until, up...

  • [时态综合] 时态一致 发表日期:2013-02-27

    1) 如果从句所叙述的为真理或不变的事实,则永远用现在时。 At that time, people did not know that the earth moves. He told me last week that he is eighteen. 2) 宾语从句中的助动词ought, need, must, dare 时态是不变的。 He thought that I need no...

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