Description English Grammar

This is very basic and easy English Grammar useful for both teachers and students. In this application all basic concepts of English Grammar are explain clearly.
The following English Grammar concepts tried to be cover up in this application.
In nouns following topics are explain.
Nouns
Common Nouns
Proper Nouns
Singular Nouns
Plural Nouns
Collective Nouns
Masculine and feminine nouns
In pronouns following topics are explain.
Personal pronouns
Reflexive pronouns
Interrogative pronouns
Demonstrative pronouns
In adjective following topics are explain.
Adjective endings
Kinds of adjectives
Comparison of adjectives
In determiners following topics are explain.
The articles
Demonstrative determiners
Interrogative determiners
Possessive determiners
In verbs and tenses following topics are explain.
The simple present tense
Am, Is and Are
The present progressive tense
Have and has
The present perfect tense
The simple past tense
Regular and Irregular verbs
Was and were
The past progressive tense
The future tense
can and could
may and might
Do, does and did
Would and should
Other than this the following topics are also covered in this app.
Subject-verb agreement
Adverbs
Prepositions
Conjunctions
Interjections
In sentences following topics are explain.
What is a sentence?
Kinds of sentences
The imperative
The subject and the object
Direct and indirect objects
Positive and negative sentences
Questions
In prepositions following topics are explain.
Periods
Comma
Exclamation point
Questions mark
Apostrophe
All the topics stated above are explain with examples. Exercises are also added for each topic.