Point 14 in the category of NEGATION:
negative forms of mental process verbs (‘I don’t think’, ‘I don’t believe’) followed by a complement clause, where the negative form is in the mental process verb rather than the complement clause
An iWeb search for:
_P _VD _X think|believe that_C
1 I DO N’T THINK THAT 20060
TLC SPEAKING TEST EXAMPLE:
I don’t think that food here is expensive.
female Mexico B1
2 I DO N’T BELIEVE THAT 5674
3 I DO NOT THINK THAT 5519
4 I DO NOT BELIEVE THAT 5404
5 WE DO NOT BELIEVE THAT 1728
6 I DID N’T THINK THAT 1528
7 YOU DO N’T THINK THAT 849
8 WE DO N’T BELIEVE THAT 639
9 WE DO N’T THINK THAT 594
10 I DID NOT THINK THAT 524
11 WE DO NOT THINK THAT 496
12 HE DID NOT BELIEVE THAT 487
13 YOU DO N’T BELIEVE THAT 469
14 THEY DO NOT BELIEVE THAT 397
15 HE DOES NOT BELIEVE THAT 331
16 HE DID NOT THINK THAT 313
17 THEY DO N’T BELIEVE THAT 268
18 I DID NOT BELIEVE THAT 246
19 YOU DO NOT BELIEVE THAT 243
20 THEY DID NOT BELIEVE THAT 243
21 I DID N’T BELIEVE THAT 240
22 HE DOES N’T BELIEVE THAT 240
23 THEY DO N’T THINK THAT 213
24 YOU DO NOT THINK THAT 192
25 HE DID N’T THINK THAT 188
26 HE DOES N’T THINK THAT 178
27 WE DID N’T THINK THAT 167
28 WHO DO NOT BELIEVE THAT 164
29 THEY DID NOT THINK THAT 144
30 HE DOES NOT THINK THAT 130
31 THEY DO NOT THINK THAT 124
32 HE DID N’T BELIEVE THAT 117
33 THEY DID N’T THINK THAT 103
34 WHO DOES NOT BELIEVE THAT 100
35 SHE DID NOT BELIEVE THAT 100
36 THEY DID N’T BELIEVE THAT 96
37 WHO DO N’T BELIEVE THAT 94
38 SHE DOES NOT BELIEVE THAT 93
39 YOU DID N’T THINK THAT 92
40 SHE DOES N’T THINK THAT 90
41 WE DID NOT THINK THAT 86
42 WHO DID NOT BELIEVE THAT 80
43 SHE DID N’T THINK THAT 80
44 SHE DOES N’T BELIEVE THAT 77
45 SHE DID NOT THINK THAT 64
46 WHO DO N’T THINK THAT 61
47 WHO DOES N’T BELIEVE THAT 57
48 WHO DOES N’T THINK THAT 47
49 IT DOES NOT BELIEVE THAT 45
50 WE DID NOT BELIEVE THAT 44