The verb in a sentence is the word that shows action or being. The subject of a sentence is the person or thing that's doing the action, or being something. For example: Maya kicks the ball. In ...

The words ‘who’, ‘whom’, ‘which’, ‘whoever’, ‘whomever’, ‘whichever’, and ‘that’ are known as relative pronouns in the English language.

Back to the errors In the first sentence (The boy have gone’, ‘has’ should go with ‘boy’ because a singular subject attracts a singular verb.

Modal verbs, in combination with other verbs, express several things, namely what one can do (ability), what is required of one (obligation), the chances of something happening (possibility) and ...