1.The girl is singing in the classroom.(改为否定句)(改为一般疑问句)

问题描述:

1.The girl is singing in the classroom.(改为否定句)(改为一般疑问句)
2.They are looking for bag.(对画线部分提问)
3.I am mending my bike now.(同上)
4.There are twelve studens over there.(同上)
5.I can speak English.(改为一般疑问句)

一般疑问句,就是将一般疑问词提到句首.没有一般疑问词(am is are)就加上助动词(be,do,have)放在句首.然后句子中间注意要改变的地方.基本助动词只有三个:be,do,have,他们没有词汇意义,只有语法作用,如协助构成进...