精选优质文档-倾情为你奉上高中英语语法之时态和语态一、 用括号里的词的适当形式填空:1. He often_ (ride) a bike to school. 2. He_ (be) from Germany. 3.You_ (look) tired today. 4.They_ (speak) English fluently. 5. Practice_ (make) perfect. 肯定形式 否定形式结构: 用法: 表示经常性或习惯性的动作; 表示现在的情况或状态;表主语具备的性格、特征和能力; 表示普遍真理和自然规律或者格言警句;常与副词always, every time, now and then, occasionally, often, seldom, sometimes, usual