Which of the following statements is not correct with reference to English grammar?
1
In a sentence with both a helping verb and a main verb, it is the main verb that is reflective of the tense, person and number.
2
In inverted sentences the subject follows the verb.
3
The verb of a subject remains singular or plural regardless of any intervening expressions.
4
When the subject of an adjective clause is a relative pronoun, the verb in the clause must agree with the antecedent of the relative pronoun.