B1 Point 24 in the category of QUESTIONS is defined as:
‘wh-‘words + the negative form of modal verbs + subject + main verb to form ‘wh-‘questions.
B1 Point 26 in the category of QUESTIONS is defined as:
modal verbs + ‘not’ + subject + main verb to form ‘yes/no’ questions
*Note that there is already an entry at B1 for ‘can’t’ questions. And a much more general A2 point 25 in CLAUSES/interrogatives: negative ‘wh-‘ interrogative clauses. Point 25 includes an example sentence that includes ‘could’.
A search in iWeb for:
_VM _XX _P _VVI ?
1 WOULD N’T YOU SAY ? 678
2 WOULD N’T YOU AGREE? 508
3 CA N’T YOU SEE ? 214
4 WOULD N’T YOU THINK ? 112
5 CA N’T YOU TELL ? 92
6 CA N’T YOU READ ? 40
7 CA N’T YOU UNDERSTAND ? 39
8 WOULD N’T IT WORK ? 32
9 WO N’T IT WORK ? 19
10 WOULD N’T YOU KNOW ? 18
11 WO N’T YOU COME ? 17
12 WO N’T YOU SAY ? 14
13 CA N’T THEY MISS ? 10
14 CA N’T IT WAIT ? 10
15 WO N’T YOU DIE ? 10
Crookston Times