小黑板英文

书上例子第一句：There were small desks in the classroom before. 以前教室有小桌子第二句：There are big desks in the classroom now. 现在教室有大桌子 分析：before 是以前的意思 所以第一句be动词 用are过去式werenow是现在的意思 所以第二句be动词 用are 造句：第一句：There was a small blackboard in the classroom before. 以前教室有小黑板第二句：There is a big blackboard in the classroom now.现在教室有大黑板 第一句：There was no computer in the classroom before. 以前教室没有电脑第二句：There is a computer in the classroom now.现在教室有台电脑。 你看下图片是一台还是很多台，如果有很多台就是： There are computers in the classroom now. （computer用复数，be动词用are） 第一句：There was no a map of China in the classroom before.以前教室没有中国地图第二句：There is a map of China in the classroom now.现在教室有中国地图 主要的知识点是：There was/were...before：以前有...There was no...before：以前没有...There is/ are...now： 现在有...

北京地区使用京版教材的小学课堂可使用“声典蛙 点读笔”，比多媒体更方便。