correlative conjunctions

Both + N + and + N + plural verb -> "Both the cat and the dog need attention."

both of + the + plural N + V -> both of the projects were successful

Whether + clause + singular V => whether the answer is right or wong matters less than the effort

Either of determiner + pural N + singular V -> Either of the answers is correct

The more + N/phrase/clause, the more + N/phrase/clause -> The more practice, the higher score

Neither + singlular N + nor + singlular N + singular V -> Neither John nor Mary is at home.

S + be + not only + adj + but also + adj -> He is not only humorous but also friendly.

Either + singular N + or + singular N + singular verb -> either the teacher or the student has the book

Neither of the + plural N + singular verb -> Neither of the solutions was effective

S + V + either + verb + or + verb -> You can either start now or wait until tomorrow