There are twelve students over there.
1 改为否定句
There aren't twelve students over there.
2 对划线部分提问
How many are there students over there?
3 改为一般疑问句
Are there twelve students over there?
做肯定回答
Yes ,there are.
There are twelve students over there.
1 改为否定句
There aren't twelve students over there.
2 对划线部分提问
How many are there students over there?
3 改为一般疑问句
Are there twelve students over there?
做肯定回答
Yes ,there are.