英语的八大时态和构成形式是什么??答:2.时间状语: always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, 3.基本结构:动词 原形 (如主语为第三人称单数,动词上要加(e)S) 4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数...
英语八大时态;意义,结构,用法,标志词,配例句答:2.时间状语:always, usually, often, sometimes, every week (day, year, month...), once a week, on Sundays, 3.基本结构:动词 原形 (如主语为第三人称单数,动词上要加(e)S)4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,...