请问这个句子涉及了什么语法:What are you doing for vacation?I'm visiting my grandmother.

问题描述:

请问这个句子涉及了什么语法:
What are you doing for vacation?I'm visiting my grandmother.

时态:现在进行时表将来
What are you doing for vacation?I'm visiting my grandmother
你假期要做什么?我要去看望我的祖母