A short explanation and an exercise on THIS LINK
A detailed explanation and many exercises and videos on THIS LINK
Exercise on future perfect HERE
Exercise on future continuous HERE
Some examples of future continuous in songs HERE
It is the only impersonal pronoun in English. The following are some of the important uses of it.
It can be used as a subject to an impersonal verb.
The pronoun it is used as a provisional subject, when the real subject is an infinitive.
It is used to represent a noun in the neuter gender.
It can be used to represent a young baby of either sex.
It can also be used for small and domestic animals.
It is used as an emphasizer before a noun or a pronoun.
It can be used to refer to a preceding statement.
Explanation in video HERE
LANGUAGE ANALYSIS : This PAGE will help you to analyze the errors in authentic pieces of writing at various levels of English language and understand common errors.
GRAMMAR LANGUAGE: what is an adjective, an adverb, an article, a clause, imperative, infinitive, subject, pronoun, etc? Find explanations and examples on THIS PAGE
GRAMMAR QUIZZES: test your knowledge on tenses, collocations, modals, spelling, etc, on THIS PAGE
Punctuation is important to avoid misinterpretations like these ones:
Review the basics of punctuation HERE