8大时态结构一、一般现在时1、概念:表示经常发生的情况;有规律出现的情况;总是发生的;事实真理。2.时间状语:Always,usually,often,sometimes,everyweek(day,year,month),onceaweek(day,year,month),onSundays(onMondays),etc.3.基本结构:主语+动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)4.否定形式:主语+am/is/are+not+其他;此时态的谓语动词若为行为动词,则在其前加dont,如主语为第三人称单数,... 2024-03-0585117.39 KB8页154
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