really ought to – English Grammar Profiler
In the English Grammar Profile, C1 point 180 in the category of MODALITY is defined as:
‘ought to’ with ‘really’ to add emphasis.
A search on iWeb for clusters with lexical verbs:
1 REALLY OUGHT TO KNOW 254 2 REALLY OUGHT TO GET 136
3 REALLY OUGHT TO GO 76
4 REALLY OUGHT TO CONSIDER 75
Golf Channel It’s something they really ought to consider.
*We can see mostly A1 infinitives in the following ranked order:
take, make, give, look, read, start, think, stop, see, use, come, work, put, find
A2:
check, try
A search in iWeb for other adverbs in this position:

_RR ought to
1 REALLY OUGHT TO 3751 2 PROBABLY OUGHT TO 736
3 ALSO OUGHT TO 409
5 CERTAINLY OUGHT TO 223
7 STILL OUGHT TO 135
8 PERHAPS OUGHT TO 127
11 NEVER OUGHT TO 86 12 REASONABLY OUGHT TO 86 13 JUST OUGHT TO 84
14 SURELY OUGHT TO 84 (C1 stance adverb)
Brady‘s return surely ought to have helped immediately in that regard.
torontosun.com
15 ALWAYS OUGHT TO 79 16 SO OUGHT TO 77
17 WELL OUGHT TO 69 (may well)
20 DEFINITELY OUGHT TO 51
