100 golden rules of English Grammar :-
A. SUBJECT - VERB AGREEMENT
1 . Two or more Singular Subjects connected by and usually take a Verb in the Plural.
For example,
Incorrect- Hari and Ram is here.
Correct- Hari and Ram are here.
Incorrect- The Secretary and Principal are coming.
Correct- The Secretary and Principal is coming.
(Here the same person is .Secretary as well as Principal)
For example,
Incorrect- Every boy and girl were ready.
Correct- Every boy and girl was ready.
For example,
Incorrect- Neither he nor I were there.
Correct- Neither he nor I was there.
For example,
lncorrect- Neither the Assistant Masters nor the Headmaster was present.
Correct- Neither the Headmaster nor the Assistant Masters were.