An article is a word used before a noun that indicates whether or not the reference is to a specific entity or entities or an unspecific one. 

There are only three articles, a, an and the. A and an, the indefinite articles, are used to refer to a single and unspecified entity. A is used with nouns that start with a consonant sound, as in a battery, while an is used with words that start with a vowel sound, as in an iPhone.

The, the definite article, refers to a specific entity or entities. The single entity may also be made up of multiple individual entities, as in, for example, the class of 1987, the Beatles.

An adjective is a word that modifies a noun or a pronoun. In general, the purpose of an adjective is to describe a noun or pronoun and provide more information about it. Adjectives provide answers to questions such as “What kind?” “Which one?” and “Whose is it?”

An adverb is a word or an expression that modifies a verb, adjective, another adverb, determiner, clause, preposition, or sentence. Adverbs typically express manner, place, time, frequency, degree, level of certainty, etc., answering questions such as how?, in what way?, when?, where?, and to what extent?.

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These are the three present tense forms of to be. Am is for the first person singular (I am), is is for the third person singular (he is, she is, it is) and are is for the first person plural (we are), the second person singular and plural (you are) and the third person plural (they are). Check your english level with online am/is/are exercises. 

Picture / Vocabulary Tests were designed to help you learn English Vocabulary and Reading skills. You'll look at a picture then read a question and choose your answer. 

An article is a word used before a noun that indicates whether or not the reference is to a specific entity or entities or an unspecific one. 

There are only three articles, a, an and the. A and an, the indefinite articles, are used to refer to a single and unspecified entity. A is used with nouns that start with a consonant sound, as in a battery, while an is used with words that start with a vowel sound, as in an iPhone.

The, the definite article, refers to a specific entity or entities. The single entity may also be made up of multiple individual entities, as in, for example, the class of 1987, the Beatles.

An Auxiliary Verb (or a helping verb as it's also called) is used with a main verb to help express the main verb's tense, mood, or voice. The main auxiliary verbs are to be, to have, and to do.

Comparative adjectives enable us to express the difference between two people or things.

• Bob is taller than Jack.

We use superlatives to compare one person or thing to several others.

• Barcelona is the most beautiful city I’ve ever seen.

Comparative adjectives enable us to express the difference between two people or things.

• Bob is taller than Jack.

We use superlatives to compare one person or thing to several others.

• Barcelona is the most beautiful city I’ve ever seen.

Conditionals have two parts or clauses that give a condition in the dependent clause and a result in the independent clause. The condition clause usually contains an if statement. There are several different forms of conditional sentences that allow the writer to express various meanings using different tenses.

Use of Could

• Past tense of Can.
  • At one time I could run a mile and not get out of breath.
• Polite Request / Auxiliary (Modal) Verb
  • Could I borrow your pen, please?
• Conditional / Auxiliary (Modal) Verb
  • You could get good marks in the exam if you study everyday.

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