01英语八种时态1、一般现在时概念: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,everyweek(day,year,month),onceaweek,onSundays,etc.基本结构:①be动词;②行为动词否定形式:①am/is/are+not;②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,则用doesnt,同时还原行为动词。一般疑问句:①把be动词放于句首;②用助动词do提问,如主语为第三人称单数,则... 2024-10-2311813.51 KB3页74
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