互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本,课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒在没有实义动词的句子中使用be动词, am is 的过去式为was; are的过去式为were.
构成:肯定句:主语 was (were) 宾语
如:I was late yesterday. (昨天我迟到了。)
否定句:主语 was (were) not 宾语
如:We weren't late yesterday. (我们昨天没迟到)
疑问句:Was (Were) 主语 宾语
如: Were you ill yesterday? (你昨天病了吗?)
肯定回答: Yes, I was. (是的,我病了。)
否定句: No, I wasn't. (不,我没病。)
特殊疑问句: 特殊疑问词 was (were) 主语 宾语
如:When were you born? 你是什么时候出生的?
2. 实义动词的一般过去时态
肯定句要使用动词的过去式,否定句和疑问句要使用助动词do和 does 的过去式 did.
肯定句为:主语 动词过去式 宾语
如: I went home at nine o'clock yesterday.(我昨天九点钟回的家。)
否定句:主语 didn't 动词原形 宾语
如:I didn't go home yesterday. (我昨天没回家。)