The second conditional is used to talk about hypothetical or imaginary situations that are unlikely to happen in the present or future. It’s often used to discuss dreams, wishes, or unreal scenarios.

Relative clauses are used to give additional information about a noun in a sentence. They are introduced by relative pronouns like who, whom, whose, which, and that. Relative clauses make sentences more detailed and interesting by explaining or identifying the subject.

Modal verbs are auxiliary (helping) verbs that express necessity, possibility, permission, ability, and more. They are used to modify the main verb in a sentence and provide additional meaning. Unlike regular verbs, modal verbs do not change form based on the subject.

Exclamatory sentences are sentences used to express strong emotions such as surprise, excitement, anger, happiness, or disbelief. These sentences convey feelings in a more powerful way than regular sentences. Exclamatory sentences often end with an exclamation mark (!) and are usually short and to the point.

"Will" and "be going to" are both used to talk about the future in English. Will = predictions, promises, decisions made at the moment of speaking. Be going to = plans or intentions, predictions.