MUM: What time did you come home last night?
ANNE: Oh, about 3 o'clock.
MUM: What! That's much too late!
First, Why does she use much too, not too much? Can we replace much too, with too much.
Second, what is the difference between them.
I read the answers of the following questions but I don't know if these expressions are interchangeable or not:
Update:
is the following incorrect?
What! That's too much late!
Best Answer
Indeed, you want "much too" here. As was said in the ELU question @AhmbroDude linked to:
To elaborate on this a little, notice that you can't put much directly before an adjective or adverb, except in the comparative form:
This alone should tell us that "too much late" doesn't work.1
On the other hand, you can say too before an adjective or adverb:
Finally, much can come before too. If it does, not only does it mean "more than acceptable", but "a lot more than acceptable".
1 Although the comparative does: