I would really appreciate it, if someone could tell me whether the usage of "not only but it also" structure with "could" is acceptable or not in terms of grammar
Because of the advancement in communication technology and medicine, generally, not only could people expect a longer life expectancy , but they also could experience a more convenient lives than in the past.
Your word order is a little unexpected. Try this instead: ... , but they could also ...
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Your word order is a little unexpected. Try this instead:
... not only could they ..., but they could also ...
CJ