Books4Languages (English)

English Grammar A1 Level: To be is an auxiliary verb and it is essential in grammar.

When expressed in its negative form, the verb denies something about the subject.

https://open.books4languages.com/english-a1-grammar/chapter/to-be-negative

English Grammar A1 Level: To be is an auxiliary verb and it is essential in grammar.

When expressed in its affirmative form, the verb confirms something about the subject.

https://open.books4languages.com/english-a1-grammar/chapter/to-be-affirmative

English Grammar A1 Level: Gerund is a verb that functions as a noun referring to an action, a process or a state.

https://open.books4languages.com/english-a1-grammar/chapter/gerund

English Grammar A1 Level: The infinitive is the basic form of a verb, and we use it to form other verbal tenses.

https://open.books4languages.com/english-a1-grammar/chapter/infinitive

English Grammar A1 Level: Subject pronouns replace a subject which is a person or a thing in a sentence.

https://open.books4languages.com/english-a1-grammar/chapter/subject-pronouns

English Grammar A1 Level: Cardinal numbers are used to express the quantity of something.

https://open.books4languages.com/english-a1-grammar/chapter/cardinal-numbers

English Grammar A1 Level: This book is the Grammar section of the A1 level of the practical guide for learning English as a second language. It forms a part of the  book series My English Skills. It is fully written in English, and it  serves as a base for the adaptation to different mother tongues.  Starting from an integrated curriculum of languages, we offer an  eclectic system with a distribution of contents based on the needs of  learning objectives.

https://open.books4languages.com/english-a1-grammar/front-matter/introduction