初中英语时态标志词一、 一般现在时:1
概念:经常、反复发生的动作或行为及现在的某种状况
时间状语: always, usually, often, sometimes, every week (day, year, month⋯), once a week, on Sundays
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)
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,则用doesn't ,同时还原行为动词
一般疑问句:把be 动词放于句首;用助动词do 提问,如主语为第三人称单数,则用does ,同时,还原行为动词
It seldom snows here
He is always ready to help others
Action speaks louder than words
二、 一般过去时:1
概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为
时间状语: ago, yesterday, the day before yesterday, last week(year, night, month⋯), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc
基本结构: be 动词;行为动词4
否定形式: was/were+not;在行为动词前加didn't ,同时还原行为动词
一般疑问句: was 或 were 放于句首;用助动词do 的过去式 did 提问,同时还原行为动词
例句: She often came to help us in those da