“I still haven’t thanked Aunt Lucy for her present.” “It’s time you ___"为什么是虚拟?did 而不是it is time sb to to sth.

“I still haven’t thanked Aunt Lucy for her present.” “It’s time you ___"为什么是虚拟?did 而不是it is time sb to to sth.
“I still haven’t thanked Aunt Lucy for her present.” “It’s time you ___"
为什么是虚拟?did 而不是it is time sb to to sth.

“I still haven’t thanked Aunt Lucy for her present.” “It’s time you ___"为什么是虚拟?did 而不是it is time sb to to sth.
It’s time这个句型的后面,语法书有写,规定一定要用虚拟的.