The conditional perfect, would have, refers to a missed opportunity in the past. In informal speech, it contracts to would’ve, not “would of.”
Grammar
Contractions with “have”
To make a contraction with the verb HAVE, join the conjugated verb to the subject and replace the first two letters of the verb with an apostrophe.
Subject pronouns
The subject of a sentence is the person or thing that performs the action of the verb. The subject pronoun replaces this person or thing.
Auxiliary Verbs
Auxiliary verbs, including be, do, have, and modals like can and will, are used with a main verb to form a statement or a question. They are sometimes referred to as “helping verbs” because the main verb needs “help” in order to complete a sentence or question.
Definite article
The English definite article, the, is used very little in comparison to the definite articles in some languages, including French and Spanish. On the other hand, the definite article is used a lot more in English than in languages like Chinese, Japanese, and Russian, which do not have articles at all.
Simple past -ed pronunciation
There are three ways to pronounce the final -ed of regular verbs in the simple past tense. This pronunciation is determined by the final sound of the verb in the infinitive: Is it a voiced consonant, an unvoiced consonant, or a vowel sound?
Contractions with Do
The present and past tense of the verb “do” can be contracted with the negative word “not”: lesson.
Simple past of regular verbs
The simple past is used to describe an action that occurred and was completed in the past. For regular verbs, the simple past is formed by adding -ed to the base form of the verb (the infinitive without to).
Present progressive
The present progressive, sometimes called the present continuous, is formed with the verb BE conjugated in the simple present followed by the present participle of the main verb.
Yes/No Questions
Yes/no questions are asked using one of these verbs: be, have, do, or a modal verb. They can be answered with a simple yes or no.
Negation with “do”
In negation, do is an auxiliary verb. It is used to help make a sentence negative.
