Modal verbs
This lesson explains the grammar of modal verbs and where they are placed in a sentence or question.
Grammar
Modal verbs (part 2)
This lesson explains the meaning of each modal verb and provides example sentences.
Negation and the verb BE
The verb BE can be negated with negative adverbs, adjectives, and prefixes.
Negation and the verb DO
This lesson explains one of the very important roles of the verb DO: the formation of negative phrases.
Negative adjectives
In English, one way to make negative statements is with a negative adjective: no or neither.
Negative adverbs
Negative adverbs are used to make negative statements. English negative adverbs include not, never, and nowhere. This lesson explains how to form negative statements using these adverbs.
Negative prefixes
Negative statements are the opposite of affirmative statements. In English, one way to make negative statements is by adding negative prefixes to nouns and adjectives.
Nouns
A noun refers to a person, place, or thing.
Past participle
The past participle is a verb form that indicates a completed action. It is used in perfect aspects, adverb clauses, and the passive voice.
Past perfect
The past perfect, or pluperfect, is a compound verb form which requires two verbs: had and a past participle.
Past perfect progressive
The past perfect progressive, also called the pluperfect progressive is a compound verb form. It requires three verbs: had + been + verb+ing.
Past progressive
The past progressive is used to describe an action that began in the past, continued for a period of time, and then ended in the past. It is formed with the verb BE conjugated in the simple past plus the present participle.
Past tense
In English, there are four different verb forms, or aspects, that together comprise the past tense.
Perfect aspect
English has four "perfect" verb forms, each of which is an "aspect" of the two English tenses.
Possessive adjectives
Possessive adjectives describe to whom or to what something belongs. There is one possessive adjective for each grammatical person.