改错、lt is monday — grandma and l go to a big shopping mall

是强调monday么？我认为应用强调句型。It is on monday that grandma and I go to a big shopping mall.

It is monday today,grandma and I will go to a big shopping mall.

It is monday, grandma and I are about to go shopping in a big shopping mall.

如果改一个，就加will吧