This is a pen ,That is her book怎么改成否定句 These are my sisters怎麼改成疑问和否定句

问题描述:

This is a pen ,That is her book怎么改成否定句 These are my sisters怎麼改成疑问和否定句

This is not a pen.
That is not her book.
Are these my sisters?
These are not my sisters.

This isn't a pen. That isn't her book.
Who're these? These aren't my sisters.
请采纳.

This not your pen

This isn't a pen.
That isn't her book.
Are these my sister's?
These aren't my sister's.
变否定句有be动词和情态动词的直接在be动词和情态动词后面+not
没有的+do/does再+not
变疑问句有be动词和情态动词的直接提前be动词和情态动词,没有的在前面+do/does

1.This is not a pen.
2.Thatis not her book.
3.Are these my sisters?
There are not my sisters.
把陈述句改成否定句只要在动词后加上not;
把陈述句改成疑问句,如果句子中有be动词,只要把be动词提前,没有be动词的加助动词do/does(单数)放在句子开头