we+are+reading+and+writing改写成否定句?
原句:We are reading and writing.(我们正在读书和写作。)
改为否定句:We aren't reading and writing.(我们不是在读书和写作。)
英语的肯定句变为否定句的方法:
1、如果句子中存在be动词(am/is/are/was/were),变为否定句只需要在be动词后+not。
例如:
He was playing the piano at that time.(他那时在弹钢琴。)
He wasn't playing the piano at that time.(他那时不在弹钢琴。)
2、如果句子中存在情态动词will/would,may/might,shall/should,can/could,need,ought以及had better,在这些后+not。
例如:
You had better get up early.(你最好早点起床。)
You had better not get up early.(你最好不要早点起床。)
注意:ought to应该…在肯定句中“to”不得省略,在疑问句或否定句中省略。
3、如果句子中仅有实义动词,则需要添加助动词,在助动词后+not。
非单三的一般现在时:在动词前+don't 单三的一般现在时:在动词前+doesn't
一般过去时:在动词前+didn't 完成时:在have/has/had后+not
被动:在第一个助动词后+not
Sth be not+done/Sth have(has)not been done
4、固定搭配:tell sb(not)to do sth,let sb(not)do sth,…