英语动词的分类及基本形式 ■ 动词的分类 表示动作中状态的词叫做动词。根据其在句中的功能,动词可分为行为动词、系动词、助动词和情态动词四类,有些动词是兼类词。如: We have lunch at 12. 我们 12 点吃午饭。 (have 是行为动词 ) We have been to New...
didn't need to do表示过去不必做某事, 事实上也没做。 needn't have done表示过去不必做某事, 但事实上做了。例如: John went to the station with the car to meet Mary, so she didn't need to walk back home. 约翰开车去车站接玛丽,所以她不必步行...
英语反意疑问句的三种基本结构 结构一:肯定的陈述句 + 否定的简短问句? Its Monday today, isnt it? 今天星期一,是吗? He often goes to school by bike, doesnt he? 他常常骑自行车上学,对吗? They went to the park yesterday, didnt they? 他们昨天...