Question

求英语帮忙

书上例子：There were small desks in the classroom before. 第二句（两个句子一组）There are big desks in the classroom now 让写4组句子呢，描绘一下图：before：小黑板，没有电脑只有讲桌，右边墙壁没有中国地图，都是图片。NOW：有电脑了，大黑板，有中国地图在墙上。 就仿照上面的句子写，我不知咋写

Answer 1

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were
now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...