mum made dumplings for us yesterday 改为否定句
问题描述:
mum made dumplings for us yesterday 改为否定句
答
mum didn't make dumplings for us yesterday.
这个是一般过去式改为否定句,在动词前加上助动词do 的过去式did+否定词not,然后把动词改为一般现在式