现在完成进行时的句型要有疑问句的、否定句的、肯定句的句型

网友回答

Have you been to Shanghai before?你以前去过上海吗?
No,I haven't been to Shanghai before.没,我没去过上海.
Yes,I have been to Shanghai before.是的,我去过上海了.
======以下答案可供参考======
供参考答案1:
疑问：has he been doing this all the day ？否定：he hasn't been doing this all the day 肯定：he has been doing this all the day